I had a much longer post, but my browser was stupid and crashed when I tried to load chat. Hate hate hate.
First word of advice is, "Eliminate unnecessary words." If the reader doesn't need to know something, don't tell them. (>.>;; )
Also what Shiroi said: "Show don't tell." Don't spend paragraphs describing how mean someone is. Show them being horrible instead.
"Read." Like, a lot. Figure out what you like in some books, and figure out what you hate in others. Look at how the author gives his characters distinctive personalities and voices, tells you a character's backstory, constructs his world, etc.
"Write." I mean, all the time. Don't just sit there and think, "Gee it would be cool to write a book someday", do it. Think of a concept. Think of characters. Write about them. Do it as often as you can. Heck, if you don't have a plot, write character interviews or pointless short stories. But write.
"Write what you love." If you're not passionate about your story, who will be?
"Don't write something just because it's popular now." If it's not what you love, don't write it. You will be miserable or apathetic about it, and neither is good. Also, realize that what's popular now was accepted anywhere from two to four years ago, and written, polished, sent out, and rejected even before then! (More about publication below.)
"Take your time." J. R. R. Tolkien didn't bang out
LOTR and
The Hobbit in five years, okay? Ideas come at any time, and they can be developed any way. They can take forever to be developed enough for you to write, even if you keep prodding at it in your mind. Keep prodding, but be patient.
"Revise." No, unless you are a genius/freak of nature, your first draft will NOT be perfect. Not even if you outline meticulously. It will be riddles with spelling and grammatical errors, and plot holes, especially if it's your first work.
"Let your story sit before you read it." Before you go at it with a red pen, print it out and lock it in a drawer or put in on a high shelf where you won't keep looking at it. Let it drift out of your mind for at least a month. When you go back to it, you'll be able to see if with fresher eyes, and your mistakes will be more obvious to you. It will be more like it's someone else's work, and you need that so you can look at it objectively, as a new reader would.
"Don't polish a mess." Look at your story itself before you nitpick grammar. (I messed this up back in August, I think.) See if your characters are consistent, if the ending is right, if you need to change this part in the middle. Maybe you have to re-haul the whole darned story, but that's okay. The next rendition will be better, and besides--if you've printed or saved the original to something safe, you can always go back to your original idea later. But only after the foundation and framework of your story is sound can you fix those irritating little run-on sentences and commas running rampant on the page.
"Characters can't talk like people do in real life." Well they are capable, but you can't let them do it. Know why? Because in real life, people hardly ever say anything that's truly important. They talk mainly to fill time, and that's something you can't afford to spend a hundred words on. Think: does the reader really need to see Ellie tell Frank that today, Ellie ran into Bessie who was Ellie's best friend's cousin's nephew's old girlfriend, and who got her license revoked in her first week of driving, and the two girls had a good laugh? No. Your dialogue has to contribute to the story. The story comes first. Tweak it to give the illusion of what's realistic later.
"Accept criticism gracefully." If someone just says "Your work sucks!" that's not criticism, that's bashing. Criticism is when someone says, "I can't sympathize with your protagonist" or "The wizard is too powerful" or "The ending didn't make any sense" or it can be more vague, like: "I think I see where you're trying to go here, but there's something missing". Criticism hurts because it means you failed to communicate something correctly, or you messed up somewhere. But it doesn't mean you can't fix it. Criticism is just people telling you where the holes in your lovingly woven story are. You just gotta stitch 'em up.
"Use criticism to make your work better." Don't let it give you a meltdown. let it help you. However, be careful with this, and make sure the criticism you receive is actually useful to you: a fantasy/action fan might complain that your horror/romance has too much kissing and demons but not enough magic and sword-fighting.
"The one who has the last say is you." When someone gives you a suggestion for fixing a problem or making the book better (in their opinion), it doesn't mean you have to take it. Published authors don't always listen to their editors' suggestions. The story is yours and yours alone, and whether a space battle really would make this part more climatic, or whether you really should cut out that annoying little brother character, that choice is yours. Say thank for suggestions and consider them, but if it doesn't work in what you want for your story, don't use it. No one can force a change on you.
If you are interested in publication, "Learn about the business." Don't Google "publishing houses" and send your story to whatever names come up. Look at market listings in Writer's Market, and figure out what houses might actually accept your book. Also, read "Publisher's Weekly" to learn about what's going on in the biz right now. Did Mary Sue Books go out of business? Well that means you can't send your story to them, doesn't it? Are fantasy books becoming less popular? Well, that could discourage you if you're writing the next
Star Wars and desire publication, but it doesn't necessarily mean you'll fail, and it's an important piece of information to know.
"Expect rejection." Because you will get it. It's like an unspoken rule that your first query letters will be turned down. Every author you've heard of has been rejected at some point: J. K. Rowling, Timothy Zahn, Stephen King, Terry Pratchett, Jane Yolen, etc. Rejection doesn't necessarily even mean your story isn't any good. You can only be totally sure it means that that house doesn't want it; and if you're lucky, they'll tell you why.
***
Some things I've figured out myself have helped me as well. I say:
"Don't write if it's not what you want to do." You may have dreams of becoming an author, but is it really what you want? Is it really the right for you? Are you expecting to magically get the courage to show someone else your work, or write letters to scary agents? If things that a writer does daily are things you either hate or can't bring yourself to do, you'll probably just frustrate yourself. Your time is valuable: don't spend it chasing one dream when another one might be a better fit and excite you more.
"Don't give up." If it's your passion, don't let anything take that from you. Not skeptical parents, not bleak outlooks about publication, not your own logical mind,
nothing!
"Every writer does it a different way." For instance, I outline, but most writers I know don't. It doesn't mean I'm doing it the wrong way. It's just how I roll. I don't care if Stephen King thinks it's ridiculous, it's how I do it.
"Go somewhere where you can work without distractions." I cannot --
CANNOT-- write in my room if my littlest sister is in there. She will pester me with questions and break my concentration again and again no matter how many times I tell her "Yes, you can play with that but stop bugging me". My realistically ideal perfect writing situation is: I'm in my room, on my laptop, music I like (but don't love so much I must hear every word of) is playing, and there's no particularly huge crisis going on downstairs (i.e., nobody's swallowed the TV remote, or something).
"Read about writing." It can save you from making really easy mistakes that you just wouldn't have thought of otherwise. In my opinion, you'd save time avoiding a mistake that could take you anywhere from minutes to weeks to fix. That's time you can spend writing or cooking up your next story (or, you know, changing your socks).
"Don't let anything scare you." Revision, for example. You might think it's horrible. Or maybe research looks like this big gaping hole, threatening to swallow up all of your time until years go by and you haven't written a thing, your kids have grown up, and now you're in a hospital bed and lack the dexterity to type. Well, you're exaggerating (and anyway, you should do research after you've written the first draft). It's not that scary. A blank page isn't scary, it's an opportunity to see what you can do. Revision is an opportunity to make the work you've already lovingly slaved over even better. Showing it to people is an opportunity to see if what you've written is actually good yet, or if you've just been imagining it that way in your dreams, or how you can make it still better.
And whatever you do, "Have fun"~!