We have a roller!!!

We've been practicing lots of tummy time and rolling around on the bed, and it has finally paid off. He was to the point that he liked being on his stomach but couldn't get himself there on his own. So he would roll to his side, rear back his head, and scream for me to pull him the rest of the way to his belly. I walked out of the room to throw something away, for about 10 seconds, and I heard the roll me over scream. I come back and he is on his belly. I put him back on his back and this is what happend next:

I couldn't be more proud and now, more concerned for turning my back now. P.S. Sorry for the narration..