KFB INCREASE 1 BY KNITTING INTO FRONT & BACK
1 Insert the tip of the right-hand needle into the front of the stitch and knit as normal, but don’t drop it from the left-hand needle.
2 Then take the right-hand needle behind the left-hand one and insert the tip of the needle down through the back of the stitch on the left-hand needle
3 Wrap the yarn around the tip of the right-hand needle to knit the stitch. Bring the needle through to make the stitch, keeping it on the right-hand needle.
4 Take the stitch off the left-hand needle. You will have increased one stitch by knitting twice into the original stitch, first at the front, then at the back.