"When you awaken, you'll become a thing-made-of-magic instead of a thing-made-of-matter! You will have two states, transformed and baseline. You'll look the same all the time after that and not get older, and lots of magical girls don't look like adults. When transformed, your costume and weapon appear and you're much stronger and faster and more coordinated and have magic powers. When not transformed, your ordinary clothes reappear and you're pretty close to a normal human again. Making yourself even stronger after the first transformation takes the stronger kinds of magic coins, but growing more skilled is easier than getting more raw power. It takes a few minutes, plenty of time to focus on adjusting the results to your liking, and that's pretty intuitive... As long as you have magic coins to spend, chuu. A lot of the details of how you'll transform are already 'set', barring using magic coins to change them, and I can tell you what'll happen if you don't change anything and what you can change. But magic coins can also be used to increase your abilities and powers, so it's a tradeoff between adjusting things you don't like and getting stronger. It's random for each person, and not in a way you can roll the dice again."