How you think of my PSAT score?

6 on Critical Reading, 60 on Math and 48 on Writing Skills for the PSAT,66%tile on the crit reading, 91% on math and 74% at writing. Im halfway through my sopre year, and the only thing i have discovered is that I have became more of an idiot. I always try to hide the fact that I'm an idiot but now there is no denying it. Sigh how can i improve....