Oh hey, I wanted to say this looks pretty cool - I remember playing a bit of Pokemon Rangers when I rented it years ago. I like the circling mechanic; it looks like it's implemented very well in your case here; good work!
I was thinking that maybe it would be a good idea if the damage you deal multiplies by the number of circles you draw - that would make it a nice risk vs reward between playing it safe to draw a single circle, and going for broke to get more damage in more quickly.