I recently sold a cute "realistic" otter and the buyer asked if I had any other otters of different types. I said I hadn't, but would make a note. I have a huge collection of "albino" animals in Art Nouveau style that all stemmed from me being _inspired_ by "Le Chat Noir" that I felt I had to be more original with, so I created "La Chatte Blanche" (easily my standout item), so 2 days later, I made 2 otters in this style, let buyer know, and the buyer picked one, but implored me to make it in 8x10" format, something I don't typically cater for in in Art Nouveau pieces because they inherently have borders built-into the design, that would be a logistical nightmare to fiddle into U.S. paper sizes.
Anyway, Gemini gave me a great, smooth creative result when I asked for a resize, and a few minutes later in Photoshop, I had the perfect file for print, and a repeat customer buying the custom request print 30 seconds after I pointed them to the item!
Here's the original otter and the mockup I created for the customer to check. It was great fun catering this way and make some profit on that too. Onwards and upwards!