OK, two things to think about. In WW-1, it was considered BAD luck to have your photo taken with your airplane, or maybe even just your photo in general. Baron Von Richthofen managed to avoid this right up to a little before his fatal flight. Read that some where, just can't find it right now.
The second is, when flying inverted, or even upright, think of it as "bottom" and "top." No matter what attitude the model is in, it ALWAYS has a bottom and top, and your handle is the same way. If you are upside down, and getting to low, you need to add "bottom control" and vice-versa for to high. You can hold your hand any way that you feel comfortable, I lay my hand over and hand my palm facing up. Start off with long lazy eights, and just extend that to whole laps inverted, watching the wind as you progress.
Good luck and have fun!
Type at you later,
Dan McEntee