Stripes, plaids, and other patterns can be balanced on both sides of a collar by?

matching or coordinating the pattern on each side of the collar. This can be achieved by aligning the stripes or plaids on each side, ensuring they are parallel and evenly distributed. Alternatively, if the collar is small or narrow, it may be possible to position the pattern so that it is centered and balanced on both sides. The key is to carefully align and position the pattern to create a visually balanced look.