Hello, I am quite a new knitter and am making my first tea cosy. I am using straight needles and am knitting two sides and will stitch them up at the end. I am nearing the end of my first side and have successfully decreased towards the top and am down to about 10 stitches. What next?! I have lost my pattern.... Do I cast off, or do I keep decreasing, or do something else? Thanks for your help - MUCH appreciated!