I bought my theremin 2 weeks ago - a Moog Etherwave. My primary musical instrument is the piano, though I play the clarinet as well (badly). Obviously, this does not prepare one very well for something like a theremin. I do have perfect pitch, but it's not helping as much as I thought it would. In any case, it's a challenge, and I like challenges.
I'm attempting, at present, to master the aerial fingering technique, with limited success. It seems to be designed for violinists, at least the way Clara Rockmore did it, and feels very unnatural to me. Is the aerial fingering technique standardized, or is it OK to come up with your own? I find myself making an almost trombone-like motion with my arm for large intervals and opening and closing my entire hand for small intervals; is that likely to lead to trouble down the road, or is it OK to practice like that?