This one took about two hours, not very long.
The longest I've ever worked on a single piece was about 10 hours, though that was largely spread out over about a week. That would be La Lagune, which is probably my best piece I've done yet. Usually I average about 4-5 hours per piece.
Originally it was three seperate pictures - the background, the girl, and the dress. I put a TON of work into that one, what with arranging the girl and dress so they looked like it WASN'T two different photos, airbrushing it so it looked nice, repainting parts of the hair, doing the background....adding the faeries was probably the easiest part 😂
I've been working with Photoshop for about 6 years, but I've been doing photomanips like this for about a year.