For the corners I cut 4 strips of the other orange fabric I used on the quilt and used them to cover the botched corners I'd attempted before. It ended up being a bit time-consuming, and they don't look super neat and tidy, but I think it's okay.
Thankfully, all of the washable ink did wash out (which it sometimes doesn't), even the stains my iron left when the steam holes got drippy. I think it looks cute on Hakan's little bed. Now I need to start thinking about that pillowcase idea... Oh, and Pyper thinks now it's her turn for a new quilt. *groan*