Hello everyone! I'm mostly a book cover designer, but maps for books are becoming a larger part of my business. I know that for a freelance artist, it's important to develop sources of passive income. That's always been a problem for me with book covers (I use stock photos so can't sell prints under the licensing terms), but I figure maybe there's more avenues with maps?

I've thought about selling PNGs or brushes of line art buildings, trees, compasses etc, but I'm not sure if there's a demand for them.

Since I've only ever done maps for books, I'm also not familiar with the RPG space (besides casually playing a few games with friends).

Does anyone here have experience with earning passive income?