I think you need more overall muscle mass before you start nit-picking about any particular bodypart. Do the 5x5 routine that is in the training vault thread stickie at the top of the weight training forum here. Go to madcow's site and follow the linear program as it is laid out. Progressing in weights every week. Get stronger, get bigger. You could dial in yor diet too so you can gain muscle and lose a bit of fat at the same time. Read as much as you can here to learn about diet and training. Keep a logbook/journal of your training and your eating. Protein is your friend. 2 grams per lb. bodyweight to put on mass.