Its hard to start this in the winter. Next time you go in that cold church hall just think of all the thousands of other aerialists shivering and tensing muscles for the love of the challenge of aerial. Not sure where you're based, but I hope the sun will come out soon and temperatures will rise, because then your muscles will feel a lot better. Aerial is hard at first, but most people who are attracted to it probably have some background in a challenging sport of some kind. Muscles will soon build. Hard skin will form behind the backs of your knees and on your hands. It will get easier. As for photos, they're great for remembering stuff, but really you just want to be in that exercising zone not having to think about technology aswell. best of luck.