Troll Bridge

This is a commissioned piece that the client has kindly allowed me to share. I did a pencil sketch like this years ago, probably about a year after I started drawing again, and although I liked it at the time it now looks incredibly naïve. I also like how the troll has crammed itself under the bridge, which makes me wonder if trolls are like hermit crabs; do they move to ever larger bridges as they grow in size? Someone should look into this I think.