When I look at the two good guys, I REALLY like the seated guys right shoulder. It looks like it's in good proportion with his head, meaning size, you can see the tension in the jacket and where the muscle tone is, but his left arm and the arms of the standing guy look a little flat and thin to me. Also, the standing guy I think by making the raised knee pose comes across a little bit feminine, possibly emphasized by the jacket being cut more like a female suit coat. I would make the suit coat more boxy and it should be cut to hang lower on the hip. Possibly if he was standing more straight on, arms crossed holding the gun like he is the "muscle" behind the shooter, looking threatening. Just an idea.