PSAT score 213 improvement ?

That's a pretty good score. Generally, you multiply your PSAT score by 10 to predict your SAT score. It's usually accurate within 100 points. You should try to get it up a little bit if you're shooting for a top university, but that's good for most universites. Usually scores improve the more times you take the test. I got into UC Davis (a better than average school) with a 1910.