Hello everyone - this is my first time on this website and my first time posting. I started knitting a year ago and have had some success. I am trying to knit a baby blanket for my sister and like the idea of blocks (approx 3x3 in size) as the blanket. I don’t know how to graft though. I saw the instructions online and had a question about the needle. Is the yarn in the needle attached to one or both of the needles’ yarn? Is it knotted on the bottom? Does anyone have any tips for this technique? Any help is greatly appreciated!! Thanks!