Almost crawling!

Alex is soooo close to crawling. She gets up on all fours and rocks back and forth. But she just can't figure out how to move forward. You can tell by the look on her face that she is starting to get really frustrated that she can not get what she wants.

OK I've got my bootie in the air, now what??

Fine, if I can't move forward then I will just suck on my fingers!