Let's see......how to improve perfection with a broader shoulder structure for the massive muscular development of The Myth of getbig.com. Having parents with wider frames is most important. As we all know, Mary & Joseph's (of Jesus fame) blood line can be traced down to our present Alexxx. And not anyone in that mid-eastern genetic line was know for barn door wide shoulders. We know all this through breaking down the Da Alexxx code.
If The Myth has even watched male gymnast train (hopefully not for lustfull reasons) and observed all the stretching & hangs from the bar's & rings, it might become clean the importance of stretching the whole shoulder girdle for increased width. If a person is young enought (the cut off average is 22-24 years before the body starts becoming mature) and the cartilage around the joint/shoulder structure is still elastic, than the width will tend to increase. Gymnast usually start training at a very young age and can take advantage of all of this. This all has been told to me by a few gymnastic trainers.
Of course any of the following will depend on if The Myth's bone structure has not reached a mature state. Extra wide grip pull-ups to the front and behind the neck. And hanging from a wide grip after the set is done, for 10-15 sesconds or so, can be important. If the pull-up bar has hammer grip attachments than so more the better. One of the better movements is hanging from a bar with one arm only, each side. The Reeves DL requires a strong grip, almost a pinch grip, and is not meant for everyone. Can give it a try. Hold the standing position for 10-15 seconds and repeat the DL. Wide grip, dead hang hi-pulls affect the shoulder width. This is also a good laterial/posterior head delts muscle builder.
Good Luck to the big fella Alexxx. The Myth, The Man, The Legend to future BB'ing generations.