I've gotta say, I really love the details and simplicity of her design! I'm curious if the shoulder pads on her shoulders server a purpose or if they're on there just to look cool. Either way, it looks great!
It looks as though they could be a.. I can't think of the word at the moment, but just a place she can put her wrench on her shoulders like she is now in the picture. That's probably the only use I can see with them being there. Although if that's the case wouldn't you have to go back and edit all of the sprites you have for the game so far?