This is perhaps the trickiest 2-color join to maneuver, but it
works out the nicest in the end. Practice it a few times and you
should be well on your way. If you knit in the English style,
anchor the old yarn with your left hand. If you knit in the
Continental style, anchor the old yarn with your right hand.
Photographs show the English method.
Stop knitting a few stitches before the place where you want to
change yarn color.
Loop the new yarn around the old yarn. Double the
tails back and hold the new yarn tail with it’s working yarn in
your right hand. Anchor the old yarn tail around the fingers of
your left hand.
Adjust the tension on the old yarn so that you have
enough to complete the last stitches before the color change. In
the example, enough yarn is left to knit three more stitches in the
old color (pink) before switching to the new color (gray). You can
estimate how much you need by wrapping the yarn around the needle.
One wrap is approximate to one stitch.
Begin working the stitches. Keep the old yarn held in
place until you have worked the stitches leading up to the new
Work three stitches in the new color and then drop
the yarn tail.
Continue knitting with the working yarn
When working the next row or round, remember to work
the stitches with 2 strands of yarn together as one stitch. Several
rows later, you can trim the yarn tails to about an inch long. If
you are using slippery yarn, consider weaving them in a bit more