Chris: I think your roof turned out a touch better than mine. Isn't it a bore cutting all those notches? I tried doing multiple layers and it all slid around under the ruler.
(Notes: shingles seem to be a foot square. I made mine in 4mm strips with notches at 4mm, then offset them about 2mm between strips.)
Did you think there was a bench in the shelter? I thought I had a piece, but I don't seem to have installed it.