A very nice piece of artwork and an interesting idea.

Consider this, though: You spent good money on expensive acid-free artists' paper, and then paint an acidic liquid with questionable lightfastness on it? I have just begun learning how to paint, but if I invest thousands of hours in the process, I want my work to last, preferably longer than me. If nothing else, to see how bad I was when I started :-)

BTW, if you want your paintings to smell nice, try food aromas. They're usually in a glycerine basis, which is water-soluble and reasonably compatible with watercolors and water-based inks. Vapers use them to mix their e-juice, so they're easy to come by. Just an off-the-wall idea...