Crystal Sans [Desktop Wallpaper] - Test

I know the art looks different from the current art. It's because this art is back from March 2019 except the background. I wanted to post this when Crystal sans make it's appearance in Crystaltale comic. But I think I have improved and want to make the wallpaper with my current art. So I'll just post it here as a test.

I wanted to make wallpaper for each main or important character in Crystaltale. Maybe you guys can suggest how I make the wallpaper?

And I don't know if we can sell AU art. Because I know that Jakei or Jael sell their X-Tale comic and other. I just want to ask if we can sell AU art or merchandise you can say. If can, maybe I'll sell some. But I still don't know.

from DeviantArt: Popular http://bit.ly/2ZD4wYk