Haha nice
This one here well this one made me laugh and I did really enjoy this one. The ball itself looks like it is sad, I don't think you meant to give that feeling off but the ball has a look of a frown or just a sad expression on his face based on where you put the ball lines of the tennis ball. I dont much care for the color of the background, but I see why you chose it. I would go for a happier color next time if you don't want the ball to seem sad. I know colors don't sound attached to emotions but they have proven to be related and linked. I would just change that up but good job overall.
~~THINGS TO IMPROVE ON~~
Some colors that are more happy
~X~