I was looking at bodybuilding pictures last night, specifically delt development photographs. I noticed that some bodybuilders--in particular Arnold--seem to have the same basic shape to their delts that I have (specifically "sunken" rear delts), while other bodybuilders have more of the classic "canon ball" shape (which I personally find the most aesthetically pleasing). Take a look at the basic shape of Arnold's massive delt here--the rear delt in particular. It seems almost identical to the shape of my delt (I'm certainly not trying to compare our levels of muscularity!): I've been killing myself trying to bring my rear delts up, and I've made good improvement, but I wonder if no matter how hard I work my delts will aways have essentially the same shape to them?