I guys. I recently ran into a problem publishing a piece because it was a piece of art, with proper attribution, but I was told it has to be from a domain that specifically allows usage rights. To date, I have never had any problems with my submissions to P.S. I Love You or other publications using paintings with proper attribution.
For example, here is one piece published that does the exact thing: https://psiloveyou.xyz/how-to-love-a-fat-person-ba8aa83bd505
Are you only accepting photography now?