Scout's right arm is oddly place. If you've ever given or taken a piggy-back ride, it's ridiculous easy to end up accidentally choking the person giving the ride. You have to keep your forearms away from their neck, or otherwise you'd crush their windpipe. Also, the way you had the arm placed made his arm look too long.
Scout's head seems pretty big compared to Soldier's. To fix this, just make the back of his head smaller. Finally, I'd suggest moving Scout's eyes down. I redline'd where they should be on his face, hopefully it helps.