I didn't draw a single piece of PNG until i am 38. Now i am about to release my second solo developed game. My art is nothing great, but a year a ago wouldn't even believe i could draw a single sprite.
https://www.instagram.com/arcadenest_games/
I find my age to be great period to learn new skills. It is never too late.
Not bad! Nit: I think your moon is a bit too rough on the edges. Did you try a smoother edge?