Thank you! Well it varies greatly, it very much depends on the subject and also how much of a struggle it is to fix mistakes - since I'm still learning, usually there's a lot of fixing around, as I always try to push for the best.This particular piece took me about 15 hours to do, which is actually quite fast in comparison to my other pieces. Others usually take about 20 hours, thought sometimes it may stretch even up to 40+ hours if it's really difficult to pull off and/or I get stuck.