| | Re: Gathered ribbon flowers
I agree that a larger knot is probably going to work. I personally use beading thread that is super strong, but you can buy upholstery thread and it is really strong too. You definitely want to pull very tight though, if you want it compact.
As for ribbon length, I personally use 8 times the width of the ribbon, and that seems to make a nice flower. Here's a quick chart
Width-length of ribbon for flower
5/8in -5 in
1 in-8 inches
1.5 in-12 inches