Welcome to the club... falling with clipless pedals is lessons learned; we all fall... FYI... so you know, I assume you always keep whatever foot you are comfortable with clipped in and release with your dominant foot. For right handed people that's generally the right foot. When you take off from a stop, push off with the left, which is already clipped in, and don't worry about getting the other foot attached. Just ride on top of the pedal until you get some speed up... once your speed is up, you have all the time in the world to clip in. Most falls occur because the bike is moving too slowly (it's those panic clip in that cause falls). Just make sure your speed is adequate and then clip in. After awhile the whole clipping in process will be very fluid. Just give it time...

BTW here's embarassing.... friends and i were meeting at the start of RAAM. The streets of Huntington Beach, CA were lined with people and television cameras. I am cruising the street and hear my name, I turned to see who called, I also turned the front wheel and =BAM= down on my side, still clipped in, in front of the world. I could not crawl away fast enough!