Clue 5
This clue used pieces we had already cut and/or sewn in earlier clues, so that made it a little easier to work on. However, matching seam intersections and trying to not lop off points made it a bit tricky, so I still couldn't just speed through it.
Here is a close-up of the first part of Clue 5. I have these stacked in sets of 5, but each is slightly different.
Here are all parts of the completed Clue 5.