Im not expert! ^^; But id like to mention this anyway:
Maybe a bit too fast, and the single frames are too much difference rom each other because it looks like a bit...i dont know...not fluid?

yes there's only 12 frames, because I did not have the time to do more frames in between to make it more fluid,
but, you have to know though, that this effect of it not being fluid, is increased by the size of the gif itself (i think) because, it will be very small when the project will be done , and it looks more fluid, from far
also, it s super fast because the character is supposed to run and fly very fast too, so i guess, it s okay

I m not trying to excuse the lack of fluidity, of course, it s missing frames and I m sad i couldn't do better, but at least it s good enough for my project ! ^-^

I had to finish this for today, and it took me 3 days and 2 full nights to do it just, and as you can see, I finished it just in time TwT ! so, adding more frames was not possible

the wings also are not well made : the wings were 10 frames, not 12 so I had to copy 2 frames so it would make 12, and it makes the wings less fluid too , adding a bit of awkardness to the animation

sorry for typing so much, i like to explain things T_T

well...then explain ^^;