In my first project of 2018, I made a couple ball animations. I feel like they came out well.
The first one is rather simple, just a ball bouncing up and down.
The second one is more complex, however I do think I should of made the ball
squish upon impact so it looks less rigid.
The last one is probably the most complex. There's a background, and animated fire, though I'm not sure you'll notice since it's going so fast.
What I would change
I would change the color of the grass in the first one to match the rest. I would, again, also make the second one less rigid.