SAT Writing Section help?

Hey guys, I’m currently preparing for SAT and having troubles with the writing section. When I do practice tests, I usually score around 580-630. I want to improve that score so I practice a lot and write down all the problems that I got wrong. When I look at it afterwards, I know how I got it wrong, but for some reason when I do it next time, I still do it wrong. I’m stuck with this score, no matter what test I take, I got the same score everytime. Any suggestions on this? What should I do to improve it?
Thanks a lot!