The piecing is going well on my Trend Tex Challenge entry. Because there are 164, 1-1/4" HSTs the quickest and most efficient way is to sew them using a paper foundation. I always write my colours on the back of each section to guide me as I go. It's a bit like assembling a jigsaw puzzle.
The HSTs formed where the blocks intersect are even tinier, finishing at 3/4".