Cracking idea and a solidly good result. This has me thinking about using tubes of mastic or buildeers caulk which might be cheaper than glue sticks. Thanks for sharing.

You can buy 40 small (about 4" long) hot glue sticks for $1 on sale at local craft stores; the cheapest tube of paintable caulk I've seen is $2.50. For these six fields I used about three or four sticks of hot glue, so it's honestly hard to see how caulk would be cheaper. It would certainly work, though.
You all wanna see what a hot glue gun is capable of head on over to YouTube and check out DMScotty's channel
The DM's Craft. http://www.youtube.com/user/theDMsCraft/videos?view=0 :-)
Some neat stuff on that YouTube channel, thanks Grimm!