Kitchner stitch is a technique for invisibly weaving together live stitches. The photo above shows Kitchner stitch worked in contrasting yarn so that you can see what it does. Knitters tend to shy away from learning this stitch because it seems complicated when all written out, but it's actually very simple to do; the only real challenge is keeping track of where you are in the steps.

Step 1: Thread a tapestry needle with the same yarn you used to work your project. Hold the needles with the live stitches parallel in your left hand. Insert the tapestry needle through the first stitch on the front needle as if to PURL. Pull the yarn through, leaving a tail that you will weave in later. Leave the stitch on the front needle.

Step 2: Insert the tapestry needle through the first stitch on the back needle as if to KNIT, pull the yarn through, leaving the stitch on the back needle.

Step 3: Insert the tapestry needle through the first stitch on the front needle as if to KNIT, pull the yarn through, removing the stitch from the front needle.

Step 4: Insert the tapestry needle through the first stitch on the front needle as if to PURL, pull the yarn through, leaving the stitch on the front needle.

Step 5: Insert the tapestry needle through the first stitch on the back needle as if to PURL, pull the yarn through, removing the stitch on the back needle.

Step 6: Insert the tapestry needle through the first stitch on the back needle as if to KNIT, pull the yarn through, leaving the stitch on the back needle.

Repeat Step 3 - Step 6 until all stitches have been worked. Every few stitches, adjust the tension of your work, making sure not to pull too tightly. Remember, you are making an extra row of knitting rather than sewing together a seam.