My mother gave me some hand-embroidered nursery rhyme blocks she made when she was a teenager. When my son was born in 1979, I made a "quilt" for him using those blocks. I just sewed them tohether, hand tied it, and bound it with seam-binding tape. It went through wash after wash for two babies, and it still looks great. When I learn that my first grandchild is on the way, I plan to take it all apart, give it a sashing, a proper binding, some borders, and FMQ it. I expect it has plenty of life left in it. Your embroidered blocks should hold up just fine.