Get good at FMX, impressions, and watch lots of videos on different procedures.
With my class they taught us basics but never told us how to actually assist on procedures. I had to learn that in the real world. When I left class I knew how to take an FMX in 20 minutes and take impressions and thought I was set.
I now take FMX's in about 5 minutes which is really what you have to do because the patient will think you are crazy anything past ten minutes.