I'm actually using AI art from https://www.bing.com/images that runs on DALL-E
For my character art I asked it to make
"ravenman in a green jacket and feathery arms. holding two wooden shortswords. comic book style. White background"
After a few attempts I got something where is also had wings
I used
paint.net, removed the extra wings. Added two more layers. The first one was white and then I asked the AI for a forest image, also
comic book style and placed that as the last layer. Then I set the white background to be 90% transparent resulting in the effect that you see now.