10 points
It has to be his back facing the camera, doesn’t it? I never understood this debate. You can clearly see his thumb on the hand that’s on top. This would only be possible if his back was facing the camera and this is his left hand. Otherwise, his thumb would be obscured by his fist.
2 points
The siluette would be the same no matter if its the left or right arm, assuming this is a faraway shot and has barely any perspective. Think of Wile E. Coyote when he leaves a hole in something. It wouldnt matter if he hit the wall with his front first or back first, it would still be the same contour.