I coach/spotter is essential. As you focus on the manuver your spotter can see things you cant pay attention to as a beginner. I am in the same boat as you...starting out at precision aerobatics. Every Saterday night I call my Pattern/IMAC clubmates and schedule things so a few of us are at the field at the same time.

FYI, Spotting for more experienced fliers is just as valuable as getting coached. Especially if they call out what they are doing.