Nice one Zach - good to see you taking the plunge into animation
Just very quick crits (my last post before collapsing into bed)
Would suggest adding a little bit of squash and stretch to the phones (You kind of have it in principle already as the bouncy guy slides up and down when he jumps... but just a touch of deformation would be cool)
You also don't want to have the Mr.Foldy begin the anticipation of the jump just at the point Mr.Bouncy crosses in front of him.
And re the jump... it's just too quick to see what's going on. It's fine to go for quick, snappy 'blink and you miss it' action.... but you'd need to heighten the aniticipation... and hold the airborne position just a touch longer.
Hope all that helps