awe man u shouldn't give up. :C just do simple assests! use MagicaVoxel https://ephtracy.github.io/ its super easy to pick up. and its free!!! really give it a look. you can totally learn how to use it well in about an hour!! hang in there!!
Viewing post in quitting game jam. here are some ideas.
Hey man if you're looking for a tool for 2d pixel art http://www.piskelapp.com/ is a great tool that even works in browser. I wouldn't consider myself anything of an artist but this program has served me well through years of projects!