How to Make 1
One form of increasing in knitting is to work into the strand between two stitches. This increase is called a make 1, because you make a stitch by itself, instead of using a previous stitch. It is less noticiable than knitting into the front and back of a stitch.
Increase One Stitch:
Knit into front and back of the same stitch
This method can be worked in any knit stitch along a row.
Knit the first stitch in the usual way, but do not slip it from the left needle−1 stitch on right needle.
Insert the right needle through the back loop (tbl) of the same stitch from right to left.
Knit this stitch in the usual way allowing the original stitch to slip off the left needle−2 sts on right needle, 1 increase made.
On a purl row, the method of increasing is similar. Purl into the front of the next stitch, then purl into the back of it before sliding it off the left needle.
Making a Stitch:
Lifted increase or M1
This method must be worked between two stitches. Therefore, it cannot be made at the beginning or end of the row.
Insert the left needle from front to back under the horizontal strand of yarn between the stitch just worked and the next stitch.
Lift strand onto left needle. Insert the right needle into the back of this lifted strand.
Complete the knit stitch in the usual way−1 increase made.