One issue with anatomy to keep in mind is that not all muscles in the body will be fully flexed to 100% intensity, nor will they all bulge with maximum bulk. Some muscles have more volume than others, while others will bulge less, no matter how hard you work them out–they’re simply flatter in shape. What you tend to do in your image, is to bulk up all the muscles indiscriminately, and that will make the figure look too exaggerated, missing the natural variations we’re supposed to see on a body–even a very muscular one.