I had an HP medium format printer years ago, with the 9 color inks (or was it 12, I don't remember). I put specialty metal "paper" (when Fine Art America did not have metal prints) in it, checking carefully to make sure the material was not too thick. It was half the thickness of the maximum. Away I went, using the specialty flat pass through slot, and the print heads on my brand new printer got caught on the printing surface. Ruined a very expensive printer. HP engineering couldn't figure it out, so they sent me a (refurbished) replacement with expired ink, which never got used again.
Unless you're going to run your own print shop, its probably better to have someone else print it. Like FAA/Pixels!
I'm not sure as to your intent, but I can tell you that you can paint on top of a print on canvas from FAA/Pixels (did it with my own painting).
Edit: HP also spent a lot of time with me before admitting they couldn't figure out how I could use two HP printers that used the same driver on the same computer either. Install printer A. Install printer B. Printer B uninstalled printer A. Reinstalled printer A, which uninstalled printer B. The solution: 2 different computers for the two different printers.