Weee, first class. Decided to do something that wasn't time consuming and also destroyed your souls a bit /hj Remix w/ your art, and I'll create a project where I paint over it + fix whatever you want SAY IN YOUR PROJECT WHAT YOU WANT FIXED. Also, it's better to do something you're proud of or something where you can't tell what is off so you can get a better eye for what you're missing :D
Yeah, you guys wanted advice from someone who isn't a professional, so this is what you get. Join the class here! We have snacks :D https://scratch.mit.edu/projects/891443288/ (This is mostly for me, lol https://scratch.mit.edu/projects/893113651/remixtree/ ) Disclaimer: I am not fixing any art, I'm just changing things to be more accurate/aesthetically pleasing. You cant' fix art, it's just art.