Trimming an uneven beard

I live in Pakistan. In the community I live, its pretty modern. I'm 17 and have beard which do not fully cover the face. The problem is that its is out of shape. On the side burn and under face its is too much, while on the cheek there is nothing. People usually mock me. Am I allowed to cut the extra hairs, Not shaving until the beard totally covers my face and then start growing it on level base. My father is posted to capital of Country which most advance area as well as modern. All my old friends live there. When they will see me with disordered beard, they will surely mock me.