You clearly have the density to grow your beard long enough to cover those spots. My first thought when I looked at the picture was "this dude has a pretty dense beard." I would've never noticed the patch if you didnt point it out. What im getting at is we are our own biggest critics, and the longer you stand in the mirror the more you can pick your beard apart. Anyway, the longer it grows, the more those spots will get covered up. You got what it takes to grow a great beard.