Cross Stitch Guide by Kathleen M Dyer

You can carry thread over if there is no stitching between two areas of the design, but only for short distances. This means three or four squares on Aida, or four threads on linen. The thread can be carried farther if the region between the two areas has been (or will be) filled in with other stitches. How far? This depends on the relative darkness of the colours. The carried thread should be woven under the existing stitches, but sometimes dark colours show through when woven under lighter colours. Check to make sure this isn't happening. Even under the best...