I used elements from Nintendo’s Kirby and Mario games
I did this using Piskel.
I started by drawing my background.
Then I would duplicate the frame by clicking on the bottom right button.
from there I would add the next step to the animation. I would duplicate the frame each time to keep track of work I had already done.
Then I changed the rate at which the frames would change. FPS stands for frames per second.
I would repeat duplicating and changing frames till I was done.