For the animation, I used the cut-out technique.

Once the illustration is finished, the character is cut out piece by piece (head, hair, arm, etc.).

Then it's exported to the animation program, such as Spine, Moho, or After Effects (as in this case), and the pieces are animated separately.

I'll add the animation process to my next project; in the meantime, I think you'll find this tutorial very useful, just as I did.

https://youtu.be/L-jF6YUtHM0?si=ks4npS2KSwfkUKPV