I didn't know it was an animation, I love it. I have a personal taste for the simple style, I think it is a very adorable drawing.
I understand that it has some composition errors but relax buddy, over time you will improve naturally and you will have a better body composition.

Don't feel bad for not meeting your expectations, keep your spirits up. I know that you are more than capable of improving quickly, as a cartoonist I wish you good luck.
I sincerely hope that you continue to maintain that particular style that makes you stand out as a cartoonist, thank you for continuing to draw.