Karla..I've done exactly what Mary is suggesting. Decide which stripe you want next to the body of your quilt, then add your 1/4" seam allowance to that and then carefully cut your strip...only cutting 1 thickness at a time...that is if you want to use it as a vertical stripe...
Now...if you want to use it as a horizontal and have it look like a piano key border...now...thats a different story :wink: