Love the fabric, it looks great to me. The Y seam may have to be used when sewing pieces together.
Although I have never made a OBW because of the way the blocks are sewn together, good luck. :)

Barny, that would a hoot!!! Maybe you should start a thread on quilting jargon.

That is beautiful, I love the OBW, yours came out great

Love your fabrics. You did a great job choosing.

The way that I do these is to NOT sew the hexes all together; instead, I make half hexes (sew 3 segments), lay them out and sew into rows.

Use triangles from the left over fabric to fill in on the sides. You do not need another set of 6 identical - use what you have and try to match the colour shading of the hexagons they touch. You will find that the bits cut off from the ends of your strips might do well because you do not need a complete triangle to fill in these edges. Try fitting them in and see how this might workfor you. I have done many and this is what I have always used.

Looks lovely - I too would use glue if the points are shifting whilst sewing them. Good luck can't wait to see the finish project.

I think it's beautiful!!! Can't wait to see it again all finished.

There are NO y-seams when doing a OBW

Your blocks look like mine did when I made my OBW, except I trimmed all my dog ears off. All my seams were pressed open and I sewed mine in strips so there were no set-in seams. I just lined up my center seams when putting the rows together. You do need to lay the whole quilt out so when you put your rows of three together you keep the halves of the block together. I used black as an inner border (it was in my material) and then used the material I used in the center for the outer border. Actually, they don't need borders, but then you need to run a seam around the outside to keep the blocks from coming apart when it is being quilted. Turned out great! Yours will be lovely!!!