In some cases, such as the head of the reindeer, where the colour changes take part in the central area of the knitting, it is advisable to only carry the yarns across behind a small area.
The photo below shows the yarns being carried over the central part of the design only.
Once the head of the reindeer is worked, it is advisable to cut the contrast colour, leaving a tail of yarn to sew in and secure. The contrast yarn is then rejoined into the design at the start of the next row requiring that colour. This avoids excess bulk on one side of the design, which might distort the shape of the reindeer’s head.