And a a couple of animation tests I did, painted with MyPaint and animated with TVPaint 10. These two apps combined are a wonderful way to do traditional animation styles, especially for painterly & swirly artistic imagery (something vector art can't do!)
1. "Scribble Cel" technique, to simulate flowing water (old school animation technique):
https://vimeo.com/384560842." Multi-plane camera" (also old school animation technique). I did this one in layers in MyPaint and then exported everything using "Multiple PNG with transparency", which was perfect!
https://vimeo.com/39170656