How can you get muscular definition on the right side of your abs if you do crunches and reverse crunches but your left side is more developed?
I would recommend that you look into Pilates. This form of exercise works well with building balance and tone through the method of exercises that are given to the individual. If you really want to get specific in targeting your own personal areas of need, you should try working one on one with a private trainer. Good luck.