Aerial Fingering is based on the fact that Clara Rockmore started out on the violin. It is a tradition.
The antenna only cares about mass and proximity, not finger positions.
It is easier to control your body through angles, simple math for your brain to calculate, as in walking , running, picking things up or throwing things.
I hold my hand in a neutral semi closed position, totally relaxed, all motion for pitch is done by flexing the elbow joint. I have only one articulation to worry about, how many do you have to worry about?
fingers, five of them, wrist, elbow, and shoulder - also you are standing, I sit. You have to do a lot of work to get that note, right? Remember those finger positions!!!
Maybe you really want a violin?
Carolina Eyck is an excellent player and fine musician, if you invest a lot of time and energy using those methods you may approach that lofty realm of the working precision thereminist.
Just do not expect America's Got Talent to give you shot, a fellow named Charles fixed that.
Now here is the real problem, that pole antenna for pitch has a very narrow sensing range - holding pitch is like walking a tightrope. Deviate by a half inch and its way off. My theremin uses plate antenna, very forgiving, like walking down a sidewalk.
Now, could I interest you in lessons for the Kazoo . . . first inhale, place the kazoo in one's mouth, hum, inhale again and hum again ,repeat until finished.
You can send me a check in the mail.