Sounds painful to both your body and your pride but practicing will help. Good idea to loosen the tension on the pedals, too. You'll get better at it. But there's a good chance you'll fall again someday. I've been riding clipless for years and, yesterday, I fell while standing still at a stoplight. Had unclipped with the right but not the left. Waiting for a green light. Decided to shift my bike over a little and lost balance. Let my thigh take the initial impact and then rolled with it. Nothing hurt... although I needed to shove a few dollars in the swear jar afterward. :-)