I agree with Alex in pretty much everything he is saying. I particularly like how you have taken elements from the standard courts and made your own version of them, in a modern simplistic way. I understand that the faces pose a challenge, I think you have great moustaches and beards. When I look at the standard faces I actually have some problems understanding the facial features. The mouths hardly look like what I think a mouth should look like, yet they work just fine. Try taking a mouth from a standard court card and apply it to your court card. You probably have to tweak it a little to make it look good. Another idea is to print the head and try to find the shape and look of the face using pen and paper, you clearly have the talent.
And the E has got to go. Some intricate spirally design would look great.
Keep at it, and never give up.