How do you improve your Writing skills for the SAT?

I suggest you buy the CollegeBoard's Official SAT Study Guide and work through all the problems. It's really thick, and it has 10 practice tests. The guide was really helpful for me; it raised my math score about a hundred points, (writing was actually my highest) I also would just practice writing the essays. The essays are graded to a specific format, and so I recommend you research that formula and practice with that. c: Good luck!

The obvious solution is to read the SAT's official guide and see what the test-makers want. That is from the horse's mouth. If you look, you might find sample essays for each score-point with explanations of why the paper got the score it did and what would have improved it. Less obvious approaches are to read essays by good writers and imitate their styles. Dave Barry is the best writer to emulate for this sort of exercise, but other good ones are Roger Ebert, George Will, Clarence Page, and Mike Royko. Look for their essays on-line or in collections at your library. Look through a copy of Time Magazine or such so that you have an idea of what's going on in the news and can use that material for examples in your essays. The 3 most important gimmicks are length, good clear handwriting, and an effective opening paragraph. The most important feature of substance is to use organization. The worst thing you can do is to have run-on sentences. Also avoid using the word "stuff".