WIP: Tower Roof

So this project had been on hiatus for a while because I had to come up with a plan for making a roof. You can see the earlier images here: http://fencingfrog.blogspot.com/2016/11/terrain-work-in-progress.html

I built a rough frame then added some cardboard for an old miniatures box

Then it was time to add some shingles to the roof.  I'm not much of  roofer but I think the effect is OK... I was thinking I might add a second layer so I can get the over lap of true shingles but I might also consider this ready for paint.  Any thoughts?