Gosh, I know pre marking on WholeCloth will need to be done, but with a light color fabric it will be easier to see.
What I did to mess up is that I was using tissue paper with the design (clamshells) and when I started the next row they were not lined up right, so then I took my marking pencil and tried marking the design and just totally messed it up more. Since I spray basted it I took all quilting out and washed the top so I can just mark the whole thing at once, but my top came a part on the seams.