Workout Tips

ok ive been working out for about 11m now. and ive seen some good size.

hence the problem. my right arm is bigger than my left arm.

R:16in. L:15 1/2.

and the definition is much more noticable on my right then my left. i would appreciat any help you all could give me on this topic. ive tryed alot of things with out much diff.