looks good, i think this has to be one of your best...
here's my critique (pretty minor things)...
you cut off a little bit of mo's bat. i think the 'big mo' font needs a fill color and i think you should bring it up to make it look like it's resting on top of oli's bat. and the top font need's something to set it apart more from background (a shadow, make it a darker color, give it a stroke,--something along these lines).