Looking very nice- I agree with Kurt you might want to soften the edge under the pectoral and build up the muscle directly beneath it. It looks a little stuck on at present whereas the definition in rl is more progressive. You could try some rounding and raising the nipples a little. I think the sternal division on your example pic is a bit extreme for someone who is well muscled but not a bodybuilder- I prefer yours as it is, however the clavicular portion of the muscle above the pectoral on that model is rather nicely done. The shoulders on yours are in better proportion now, imho. Good stuff.