Being honest, the girl you draw as you mentioned I too find her UNIQUE. I feel a fictional background would look more attractive and blend with the character, saying that just cause the sky is looking peculiar to me haha. I even tried to draw some NFTs and also did that from this app only works pretty well as a mobile user. Here's some of my works..

This one for the 19th Million #bitcoin which was mined earlier.

This the hat Hitler used to wear mostly all the time, I like history stuff ;)