Consider putting the previously drawn frame underneath the one you are currently drawing so you can faintly see the outline (if done from paper, if you are on a wacom then make the current layer slightly transparent) - it helps with consistency in parts of the frame that are supposed to be stationary, as well as making motion more fluid.
I thought it was a duck on water until it looped a few times.
https://youtube.com/shorts/7GqTR-0GFcw
Consider putting the previously drawn frame underneath the one you are currently drawing so you can faintly see the outline (if done from paper, if you are on a wacom then make the current layer slightly transparent) - it helps with consistency in parts of the frame that are supposed to be stationary, as well as making motion more fluid.
I thought it was a duck on water until it looped a few times.