@ruthyb. I use hand controls.
I found the transition to hand controls similar to the transition from manual to automatic. On that earlier transition, I went to put my left foot on the clutch, which I no longer had, and did an emergency stop that I wasn’t expecting! I never made that mistake again!
When I Switched to hand controls, at the first junction, I accelerated instead of braked. Something that I recognised instantaneously and corrected. I never made that mistake again either!
So, just be wary and go and practice in a quiet neighbourhood. You brain will very quickly adapt.