Hey - I taught knot tying to my Girl Scouts. One of my favorites is the 'Surgeon's Knot'. It starts with the proverbial - right over left - but you do this twice, THEN left over right once. Also, I find worsted wool yarn holds tighter and seems to wear forever. That is what I grew up on. It is true not to tie the knot too tightly, pulling the fabric which causes it to rip eventually. The above knot is super on packages also. -- Pat