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

Now the next step would be to repeat the steps again, this time between frames 7 and 13, on frame 10--though you may want to tighten your frames. After finishing the first five frames--your primary and secondary keys, and your primary in-betweens--you'll be able to play your timeline and see--albeit somewhat flickery--how the motion progresses. The great thing about Flash is that you don't have to do much work to adjust the timeline on your animation (while drawing it by hand might require redrawing many frames, which is why when drawing by hand it's usually best to do stick figures first to get the motion down before starting on detail) ; you can drag keyframes around as you wish to shorten or expand motion.

Mine was looking a bit slow, so I cut a few frames--bringing it down to nine with my keys at 1, 5, and 9, primary in-betweens at 3 and 7, leaving secondary in-betweens at 2, 4, 6, and 8. Each time you go down a level in in-betweens to fill in more of your timeline and add more detail, you'll have even more drawings--almost like a pyramid hierarchy, in expanding tiers of detail.