>>107020952drawing animations is always a bitch. from scratch, technique called onion skin is a bit helpful for getting visual cue. first you sketch the different layers for the overall motion trying to keep a consistent difference between frames and then draw them out one by one.
tracing is a bit simpler, what i've used is ffmpeg to lower the framerate, exported that as a gif and then inserted an empty frame between each animation frame for drawing on.
