I'm pretty stoked about this! i'm planning to add a new listing to my etsy store: custom portraits. the customer can send me a photo of themselves, vintage photos of a loved one, pets, etc and i will blend them with my own collection of nature and vintage photos into an original, one of a kind artwork.
here's an example, a photo of me blended with a photo of my grandmother who i never met but think i resemble (no chin) and some flower pics.
The best part - no overhead for me, no risk for my customers. They can send me the photo(s) they want incorporated, i'll send them a couple of heavily watermarked possibilities, THEN they can pay for it and i'll email them the file without the watermark. oh, no shipping charges, either!