This is the experience I've had with prairie points. They become a little less pointed with wash AND with use, but not so much I found it bothersome. Yours look like they are interlocked, and unfortunately, I have found that way of constructing them to be less stable than when you just overlap them. And the size plays a part in how they hold up. The smaller they are, the more stable they are. Your quilt is lovely!! Hope the points DON'T give you problems!