<p>Well thanks for the chance longstreet 
Can others please chance me as well…</p>
<p>Anyway, since English is not my first language and studied everything on my own (no prep courses), I had pretty hard time raising my score, although my score is still inferior to others’ btw. 
My advice is, just solve as many problems as you can. SAT is all about how much you have practiced and studied. Make sure to understand why you got the problem wrong, and review it untill you fully understand it.
This was just how I studied :)</p>