I've only fallen once so far. Everyone does, you just got yours out of the way quicker.

I've had several close calls, but it's just developing that habit of twisting your foot (the correct one) out sooner rather than later. Mine was in a similar situation, uphill needing a sudden stop.

With clipless you are able to generate power better in all areas of the pedal stroke. You can search on here and youtube for examples of technique. For me, it helped to imagine I was wiping something off the bottom of my shoe on the bottom part of the stroke. But everyone has their methods. Play around with it, soon you'll discover clipless is where it's at.