I've been using Krita for a few months and I'm a beginner in drawing and painting.
Before I was just focused on 3D modeling and texture painting only.
I will use this topic as a sketchbook and post some of the things I did using Krita, everything is reduced in size to fit in the forum and don't get heavy.

Besides these images below, I have painted some icons for a game mod (Kenshi).
You can see it here https://trello.com/b/NFCg7L8Z

Excellent work!