Haha what a wonderful original idea to come up with But the thing that I like toňhe most about this picture is the movement. Movement is a lot harder to draw than most people think and strength doen't make it any easier. This for me it very simple yet very detailed at the same time, which gives it a nice balance ^^
I'm liking the, I guess I can say, angular (?) style used for the ponies. There's something really smooth about the line work. I sort of see this as the two of them just passing by. Pinkie's probably thinking about all the fun things she can do with those apples.