So I've had this problem for a few years now.

A friend of mine noticed an un-eveness in my chest.
Ever since then, I've noticed it and can't seem to even it out.
My left pectoral has a firmer inside, and seems to come out more into the armpit.
The right one isn't as protrusive, or big.

They also seem to be different shapes almost.

I could understand this a little better if I were a left, but I'm right handed, and I am stronger on my right side.

So would anyone have any tips I could use to even them out?
Anything would be appriciated.