Flash Frame-By-Frame Animation: Keyframe and In-Between Basics

Before moving any further, I took a little time to smooth our and adjust my drawings a bit. This isn't meant to be perfect; it's a sketched animation to demonstrate the techniques, and when I'm not taking screenshots in between I can finish something like this in about ten minutes. Making this smooth and fluid would require hours more of tweaking, though some would actually prefer to leave it in this rough style, as it has a quirky appeal all its own and some professional animations have been deliberately produced with the "sketchy" look.

Still, I do want to tighten this up a little bit. I've used the Smooth function to iron out my shapes a bit with just a few clicks, and then the Subselection tool to adjust individual vertices and their curves.