Apply seat of pants to chair, fingers to keyboard, and write. When you have finished a piece and edited it to the best of your ability, submit it to a publisher. Then without delay apply seat of pants to chair, fingers to keyboard, and write something else. Rinse and repeat.
'It's your job as a writer to seek out harsh criticism - and learn from it.' - Paul Cornell
Story Artist Austin Madison, gives a lecture on the process of how Pixar creates a story.
Eight Writing Tips from Kurt Vonnegut
Use the time of a total stranger in such a way that he or she will not feel the time was wasted.
Give the reader at least one character he or she can root for.
Every character should want something, even if it's only a glass of water.
Every sentence must do one of two things – reveal character or advance the action.
Start as close to the end as possible.
Be a sadist. No matter how sweet and innocent your leading characters make awful things happen to them in order that the reader may see what they are made of
Write to please just one person. If you open a window and make love to the world, so to speak, your story will get pneumonia.
Give your readers as much information as possible as soon as possible. To hell with suspense. Readers should have such complete understanding of what is going on, where and why, that they could finish the story themselves should cockroaches eat the last few pages.
Turkey City Lexicon — Things to avoid in your writing plus a few to grasp with both hands. Includes explanations of 'plot coupons', 'as you know bob', 'deus ex machina', 'said bookism' plus the apparently highly desirable 'eyeball kick'.
TV Tropes — be prepared to lose several hours if you visit this website. It's another great kick up the cliché