Now I actually did some of these exercises a while ago but it's always good to get a second opinion.

Here are my level 1s.

Bounce 1
Bounce 2

Ball Interaction

Ball Follow through

Hey Chris welcome.

1st with rocket, that's a fun idea. Yellow is squashing before contacing the ground. The final hit and stick would sell better with a stretch before impact and then a big squash as first impact. Big and dark needs a little bounce, or tiny roll if it's even heavier than that.

2 balls across. Yellow's missing the stretch, you could vary the timing some, and it's hard to tell but your arcs looks a little to /\/\/ instead of mmmm. It's hard to tell with that camera shake wether big needs a little recovery bounce or stretch, but the anticipatory squash is very nice.

I LOVE the jaws ball. How'd you make it seamless when closed? Good rolling reaction in BIG. The timing in yellow looks pretty good. The arcs could use some more arc to them. I'm not sure if I should tell you you need squetch. Squetch is helpful to sell weight even on things that normally aren't flexible, like skulls, and this is animation so it's a lot about exagerating. But some things don't squash like golfballs. But I think yellow doesn't have the bounce to be a golfball so I think I'm going to advise to add squetch, besides it's an exercise. (and I think time lapse photos of golf balls actually do show them squashed up.)

It looks like you have the idea of the tail but you're not quite pulling it off. Your 2nd joint is to tight. Fix that and of course you'll have to have the 3rd joint in relation to it but then I think that might be it.

Strong start!

-Alonso