There are a few things writers can do to improve their writing, because let's face it--nobody's perfect. The three that I have found the most helpful have been reading books and magazines, watching videos, and searching the internet for resources (like YA Stands). Here are just a few that I have found extremely helpful.
1. On Writing by Stephen King
2. Bird by Bird by Anne Lamott
2. The Writer
Last year I met Dan Wells at BEA. He has such a positive energy surrounding him, and if you've read Partials you know that he is a very smart writer. On YouTube, Dan has posted a five video series discussing the 7 Step Story Structure. Using examples like Star Wars and Harry Potter make for an entertaining learning experience. Check out Dan's website that links to the video series.