I like that you don’t make y seams seem mysterious or very hard to do accurately. Marking the points is key, at least for me. My Bernina foot has the quarter inch marks beautifully engraved and I use those marks frequently. But for the y seams it just seems to work better for me when I can focus in on the dots. I use my Purple Thang to make the dots. I have several Thangs-not all purple!-and I use it constantly. Thank you for the straightforward video. Your voice is calm and clear and I appreciated your tight focus when you were sewing.
There is a pattern in my Etsy shop to make a single block. To make a full quilt with just diamonds, you repeat the steps, using y-seams when adding each diamond. Here is a link to the pattern: myquiltingbeehive.etsy.com/listing/1302737722