Let me explain this-- I have made a Texas Flag quilt (top 98% finished) which can be seen on Pinterest. The quilt is made from 5 inch squares. When I made the star, I used muslin, sewed the 2 fabrics together and then turned the star for applique. I did "ragged" cuts in the muslin (not on purpose just not thinking) and NOW these cuts are "visible". No, the cuts don't stand up and "scream" at you but, they are "visible".
Should I remove the star and trim the muslin "neater" or will the "ragged edges" disappear when quilted?
Think of a shadow through the top fabric.

Oh have I learned my lesson because I am working on a smaller version of this quilt.