Everyone is different but what brought my most lagging muscle to my best feature was:
- Drop sets, Matthersby style: Work up to your heavy set(5-6 reps) then for your last set, (example bench 225x6) to failure, drop a plate off each side(135), take a full 10 second count to do the negative and explode up to fully locked out, repeat for 10 reps.
- flare your elbows out so your bench does not resemble the close grip bench and imagine your shoulder blades touching at the bottom. However keep your grip close, none of the wide grip crap shifting all the emphasis on your frontal delts.
- Build up your triceps on their own day with the big boy exercises. Close grip/weighted dips/skullcrushers
- Build your damn upper back! With at least twice as much volume too.... upright rows only to chest level, locked out heavy deadlifts, heavy rows.
- personal pref. I do primarily incline movements. I could explain my multiple reasons but if I am doing dips every week, I don't need a thing for lower pectoral emphasis and development. Good luck, hope this helps.