Pigeon pose

Hi everyone!

Finished a great stretching video this morning. However, I'm always having trouble with the pigeon pose. My flexibility increased during a year of fitness blender, however, not this pigeon pose. When Kelli folds one leg under her body, her but is/almost is on the mat. In my case I feel like I'm doing it wrong. My but is hanging somewhere in the air and while I can sit back, balance is really difficult in this position. I can get my back leg up, but I cannot reach to it since I fall over. Which happened too often :p.

Anyone any problems with this as well or any tips on how to improve it?