Ruffles are usually something you want to add to something. It tends to look better that way. Rather than just going into a ruffle pattern instead of Binding Off and then picking up the stitches and making the ruffle pattern.
There are some different ways to pick up and knit stitches. One way is to tie the yarn you are going to make the ruffle with to the tail yarn that is the left over from the Casting On at the beginning. And using a crochet hook, I tend to use a size 5/H, pick up the yarn (you are using for the ruffle) with the hook and pull through last loop of every row along that edge. You want to pull the loops through so that they come out on the top. You can then slip the loops off of the crochet hook and onto your knitting needle.
- pick up the number of stitches divisible by 4.
- Purl 2, Make 1, Knit 3, [Purl 2, Make 1, Knit 2] 4 times, Purl 2, Make 1, Knit 3
- knit the knit stitches, purl the purl stitches and the new stitches (make 1).
- Purl 2, Make 1, Knit 4, [Purl 2, Make 1, Knit 3] 4 times, Purl 2, Make 1, Knit 4
- repeat row 3
- Purl 2, Make 1, Knit 5, [Purl2, Make 1, Knit 4] 4 times, Purl 2, Make 1, Knit 5
- repeat row 3
- Purl 2, Make 1, Knit 6, [Purl 2, Make 1, Knit 5] 4 times, Purl 2, Make 1, Knit 6 [You can continue to make the ruffle wider just increase one after every purl stitch on the right side and repeat row 3 for every wrong side]
- Bind off stitches in the pattern (meaning bind off knit stitches as knit stitches and purl stitches as purl stitches. (ruffle instructions from "boutique knits")
M1 (Make 1): Lift the yarn lying between the stitch just worked and the next stitch and place it on the left hand needle, then knit (from learn2knit.co.uk )
YO (Yarn Over): When working on the knit side of Stockinette Stitch hold the yarn at the back of the work. Pull the yarn forward between he two needles and over the right needle to the back of the work. Knit the next stitch. (from knit 911. com )