I altered my original pattern by removing the neck part, because I thought it would choke the baby. Instead, I sewed snaps to the top, and snaps onto a light blue onesie. That way they can remove the cape when they want to stop flying the baby around without removing his whole outfit.
And if you're curious about the superhero emblem... yes that is bacon. They are calling him Baco-Bits until they decide on his name, and it's so cute everyone is using it now. So I thought it would be a good Superhero design for him! I just took dark red felt and beige felt, cut into wavy shapes. Then I topstitched the beige down to be the marbling in the bacon. You might not be able to tell, but the bacon is actually a little bit dimensional. I just tacked it onto the blue plate in two or three spots so I could make it wave like actual bacon does.
This cape is reversible too, to a plain dark blue.