Debbie, I think that would be so wonderful for you to do that for your stepson. Not only that, you might find it theraputic to handle your DH's old shirts. I wouldn't doubt you'll cry your way through it. I found that when my baby died that I would cry over the strangest things, like the day I threw away her baby vitamins. But in a way, you are preserving your DH in a very special way. In fact you could make some pillow covers or piece some things for yourself too. HEY--------if you wanted me to embroider your Dh's name and life dates on a piece, let me know.
My mother had made a twin bed size quilt for my son. It wasn't anything great but one day after he had moved out, he brought it to me because one of the seams had let loose. I fixed all the spots that needed it and then embroidered all of our family's names on the quilt. It turned out there was just the right number of names to fit just right on some of the blocks. I don't know how he felt about it but I had the feeling that when he was sleeping under it, our family was helping keep him warm.