Laughing and rolling over

I have learned to laugh out loud and to roll over from tummy to my back (although I've only done it three times) and also from back to tummy, except then my arm still stays under me and I roll quickly back to my back. But I am really practising a lot! Mom and Oma have been trying to take pictures and films of me laughing or rolling, but I always find the camera too interesting and stop whatever I was doing. This here is a very typical expression on my face.