Hi, I'm Ren Fisher from Killarney in regional Queensland. I'm 65 years old and haven't crocheted since I was about 15. But 1st grandchild coming up in July and since I'm now officially retired, I thought I would give it a go. I'm just doing a very basic 1 piece square rug in two colours. Was going great guns, got the square into the right shape and changed to the alternate colour, did one row around and then wanted to do the next white row. My question is should I tie off each colour at the end of the row or is there some way to twine the alternate colour up the stitch so I can continue wi