Excellent work. I made a 14 footer once, way back in the 20th Century, and utterly wore out my wife's sewing machine. Not the needle driving mechanism, but the feed dog just couldn't handle the stress. I got invited out to sleep in it for a few days...
I spent more time debarking and smoothing the pine poles (those little twigs can cut the fabric) than sewing the skin, though. It's a
big piece of work, but
well worth it. When you pitch it, if you put the prevailing wind (usually from the west) at the back of the lodge, the flaps create a low pressure zone above the smoke hole, and draws the smoke outside. If you go the other direction, well, not good for asthmatics.