Maybe I've bitten off more than I can chew by choosing something hard like this undulating twill. The warp is tencel and the weft is a fingering weight merino wool, I think. I messed up the threading, skipping a whole segment, and it became really noticeable once I got going, so I had to unweave a few inches to fix that... there are 2 other places where I think I switched two threads but I have to really look for those places so I just left those in... perfection is so overrated anyway. Besides, unweaving is no fun.I've learned how to use two shuttles/colors and to treadle two patterns (tabby with the left foot and the twill with the right). It's fun to watch the curves appear. Notice my perfect tension... and I forgot to use warping sticks or paper or anything. Hope the weaving police don't show up.