First of all Don't cry! Take a deep breath & blow out slowly & repeat a few times. It really does help. I do this a lot! lol Sorry this happened but things like this do. I think the bumper sticker with his name is a cute idea. Or if you want to replace the bumper just heat the piece up with your iron & it will usually peel right off & then you can replace it. Also if you are using a satin stitch or some other tight stitch then I would use a stabilizer. Otherwise you might not have to. Try your stitch on the same type practice sandwich & see if how it works for you. By the way, your quilt top is so cute. You are doing an awesome job!