look at the line from your elbow up along your tricep around your delt and up your trap. theres no movement to that line really, a BIG guy will have a good outward curve along the tricep, big rounded delts, a gap between the end of the delt and the clavicle(your delts and clavicles are one and the same), and traps that jump up off the bone, rather than smoothly ascend slowly upwards.