Well, as you get better you get faster. So even if it might disillusion you to somewhat; I spend less than 20 (working) hours per piece. Usually around 10 or less. It depends a little. So it's not that much of a significant amount of time to do my stuff. I don't know how much I spent on this, specifically, because these days I work on multiple pieces at the same time so I can't accurately measure it anymore.