Good job on the lines, they look pretty clena even if a little sketchy, the hea dproportions ar ea little off but tha tcould be easily your style ^^ to me this looks pretty good, just keep working on your skills and you'll be amazing.

The only thing that I can think might need to be revisited is the depth that he's sinking into the balloon. It looks like with how much he has already sunk into it, the sides should be bulging out a bit more above and around his elbows.

That being said, the expression is absolutely adorable! I really like how you were able to create that transparency effect through the balloon with just pencil. Very impressive to someone who can't really do that without abusing opacity filters haha

I still love this.. thank you Syber! :D