Just caught this thread and have had fun reading through all your tips. It was reassuring to see that I use many of them...makes feel like I'm "on the right track" so-to-speak!
My tip isn't much but I love it. When I make tutus I could never seem to get my knots to lay nice (to my eye anyway.) So I tie about 10 or so, slide a butter knife under 3 or 4 at a time and this allows me to pull on the knot to get it more snug and slide it together without pulling or tugging on the elastic. This gives my knots a nice uniform look too.
Thanks for starting this Maxine and thank you everyone for all the wonderful ideas!