It looks mostly good but there are a couple of big issues. First, what makes you think player 4 is always going to be left-handed? Your panel does not need to be symmetrical. Get those buttons on the other side of the stick. Seriously, find pictures of other 4-player projects or any commercial 4-player game ever made. The sticks go on the left side of the buttons. All four of them.
Also, I wouldn't angle your joysticks like that if I were you. When you're playing a game, you want the direction you push the stick to correspond with the direction your character needs to move onscreen. It will look the same on top of your panel either way, but it will feel better to play if all joysticks are oriented the same, with their top edges parallel to the screen.
Heh . . . DaveMMR beat me to it, but I already typed it out so I'm posting anyway. Saying the same thing though.