Be careful when you press half square triangles --- always press with the grain ---- not pulling out on the bias - it will distort your block.

This is much better than my first attempt. I didn't have this board then, or I would have improved much faster.

I finally figured out that my 1/4 inch was not always the same. It might have been off only a smidge, but that was enough for my blocks to be not all the same. I now have a quilting foot with a little flange on the side that measures exactly 1/4 inch. It changed my quilting life! :-)

You are doing a great job.

square using the 45 degree line on ruler and centering the ruler. then starch them before going further.

can you explain how u square from the center ? thanks

I would suggest measuring your seams and making sure you have an accurate 1/4 inch seam on the ones that are not the correct size. Rip the incorrect seams out and resew. It may seem like a lot of work but when the project is finished you will be glad you did it correctly

next time when you trace and mark, put very fine sand paper on table. this will prevent the fabric from slipping.
Also. Measure the smallest square and use that as your squaring piece. You might cut paper that size and then recut the rest to match. I would not go with what the blocks should have been. the squares can be any size and still work. When you make your square and in placement, make sure the points of the square line up with your diagonal seam lines. They will then fit.

There is a Quilt As You Go ruler to square up HSTs, and I love it. I got mine at JoAnn's with a 50% coupon.

What is a quilt as you go ruler.

Square them up. Even Eleanor Barnes has this problem, and she just squares them up before joining them together.

Every project is a learning experience. Sew buttons on the centers in wild colors. No one will see the points :>