Scamall, many thanks! Yes, the roof does need an overhang--I saw that as soon as I posted!
It has one now, and the facia is turquoise. I'm just learning a bit about watercolor, so many shadows are not there at all, or need adjustment.
I didn't see the "too long" arms, I was focused on his back and shoulders.
Yes, the pencil is showing, it is watercolor, I expected it to dissolve, but it didn't.
And thanks for commenting on the joists. I will have to do some thinking on that: not only did I neglect their width, but again, shadows in the recesses.
I hope to make use of all your comments.