Sorry, I haven't been posting last month because I am having trouble with my blog because they are changing things around. Hopefully, this is fixed now. The first square I did it your way and ironed all of my seams to one side. I had a lot of bulk where the gray square met the half square triangle. So, I stopped doing this and did my good seamstress way of ironing open the seams and this really did reduce the bulk. I would at least do this where you are going to have many seams coming together. Never in all the years I have sewn have I ever been told to iron seams your way. I know you butt your seams together, but I think I can match better with my seams open.
This will just have to be my preference and every one can do it their way. I have a lot of these to make and it takes longer than I thought it would. I have another post ready, so it will be coming along soon in a day or two!
