No. just make sure your first few stitches go over 'the tail' to bury it and when finishing you weave it in and out of a few stitches on the back to anchor it in place. Once you have a few rows you don't see anything showing from the back :) This is the same for the aida or fabric. You will get better results generally if you hoop the work particularly if it is on fabric though, to keep it stretched and the tension the same and even. Hope this helps