Here's an old post by me a few days ago in another thread:
"Muscle memory is huge . practice practice practice. I have just recently started to do more work with my off-hand. Like a baseball player that takes a few practice swings with his bat before the pitch, I do the same with my razor. When I use my off hand, I'll mimic the motion of the stroke Im going to do above the skin first 2-3 times.Then Ill put the blade on the skin and continue. This will help your muscle momory. As you get better your hand will just do what its suppose to"