As Sundown said, the second is more dynamic. The first isn't bad, but I looooove the fighter-girl  
Why don't you draw/edit the two girls together (back-to-back, perhaps, with the cute little fighter-girl on the right side?), each colored differently? 
Edit: 
Made a quick pic: 
http://nuclearstomach.bigpolley.com/images...terry/test1.jpg 
 
Edit 2: Sorry about size