Neater Cuffs on Sleeves

To make neat cuffs on a sweater that is knit flat, either knit the sleeves down to the cuffs or use a provisional cast on and knit from the top of the cuffs to the top of the sleeve. Sew the seams using a mattress stitch. Then pick up the cuff stitches and knit in the round using double pointed needles or 2 circulars so you have a seamless cuff.