It really took a while to do this. The 2 topmost on left and right figures were actually a bit tough to put on paper so I drew the forms subconsciously at first, then added the forms.i want to know whether they're looking convincing, what else can be changed and improved? This has been done completely from my imagination. I took reference only for the scapular muscles of the bottom most left figure from my sketchbook( a drawing i had practised from michaelangelo)