Artwork is sweet! So is the layout, with following possible exception...
Just an FYI, (I'm sure you are aware of this and if so please forgive), but it looks like player 3 will have to play with right arm pointing inward and player 4 with arm pointing outward. Again, probably not too uncomfortable and probably planned, but I just wanted to (hopefully in a helpful tone) point that out to you.
--JamIt