Very nice! About six months ago I tried the same thing only I didn’t have a chopper so I used scissors to cut some 5 1/2 shields. It turned out ok but not quite so nice as yours. Mine are a little rough looking.
But, shooting at an indoor range, I had a friend tell me which arrows he could hear the loudest. He could not tell the difference between shields and the “traditional” shape. Now that I have seen these, I’m gonna do up some more! I do love this type of shape.