Very nice work, Sam. I’m personally most impressed by your shelter. For anyone who has ever tried to build and design a shelter, especially a tunnel tent, trying to get the angles in the pattern right is one of the biggest hurdles. That and trying to figure out how to get the tent poles to fit in the sleeves without distorting the fabric. Good job!
Did you follow Roger Caffin’s page about building tunnel tents? It looks like one of his type of designs, especially the pointed arch.
Are you happy with the design of the vents? That’s one place I, too, had a lot of trouble trying to get right. I don’t know why it’s so hard, it looks easy enough!