you gotta nice thick look going. did you use to be fat? looks like you have stubborn fat in your abdominal area.
you probably know you could lose some fat around the midsection...but having little fat around the middle kinda suits you. bring up your chest and shoulder for a more proportional look.
the first thing i noticed about you is your neck. it is out of proportion with your powerful upper body. do some neck exercises, 4 way neck, etc. would balance out your physique, make you appear more strong.
do you do deadlifts? great compound exercsie and also works the neck.