This game is incredibly cute. Your art is amazing and it's even more impressive that you did this in paint.
As for the controls, I had trouble with how fast the character was going, which is due to me just being bad at these types of games, so no worries. Maybe you can add a noob difficulty, haha. I also kept trying to use space or W to jump as those are more traditional buttons for doing so, maybe you could make it so space as well as J works.
But yeah, again, those little beans are too adorable, great job!