I spent a large portion of the day yesterday going through all of the hand dyed fabrics and choosing the next ones to cut. Those 2 stacks are each about 3" high. I sewed triangles into squares for 4 more blocks but ran out of steam before I could sew the blocks together. Here is a preview of them next to the stacks.
I also went through the box of triangles and chose 6 more pairs of fabrics for the other quilt.
I put my single hole needle plate on my machine to make the triangle sewing easier; no triangle corners pushed down through the throat plate. I also put in a new size 70 needle. You can't be hesitant when you are starting the seam of 2 triangles. You need to take off with a little speed. Going too slow punches the fabric down through the throat plate.
If your 2 triangles sewn together aren't square after sewing it might be because the corners (that I am pointing at) aren't lined up. I line up that corner first and then line up the ends of the seam that I am going to sew.