Let's Fall in Love
This was the first animated short I made in grad school just a few years ago now...wait, how long ago was it!?
It was done very simply. It was drawn in pencil, on animation paper and timed very simply (my first exposure sheet). (I should mention for students reading this that 'timing' in animation refers to the time it takes for any action you are displaying to play back. For example, how many frames - which translate to seconds and minutes for a viewer- does it take for a character to smile, or lift their arm. Timing is really the key to creating animation that lives and breaths for a viewer.)
The holds (when a character is on screen but doing nothing new) are done with multiple drawings and each frame is a fresh drawing. Both characters are on one piece of paper so even if one character is doing nothing, they are still being traced back/redrawn. That gives it that nice shaky feel. I actually love animating this way (it feels the most like my illustration). The simplicity is charming and it lets you focus on the very earliest/simplest notion of animation - you can make still drawings come to life.