I used to make them and sell them when I was showing in Oz, they are surprisingly easy once you get going, it is just starting them off that is hard. Here are some that I made, is that what you were thinking of? 102387_0.jpg 1023870003_1.jpg
Here are some tips if you want to sell them, I used to sell mine on consignment in tack stores, they retailed for around $120, store got 20% and I got the rest:
-Get the leather browband custom made so you can make them wider. Makes it heaps easier when it comes time to wrapping the ribbon properly.
-Get the browband loops made a little bigger so that when you attach the rosettes, you can lope them all the way through and still fit the headpiece/noseband through the loops.
-Believe it or not, tri-coloured browbands are easier to make than just the dual triangular ones (you know what I am talking about?) as it is easier to get everything symmetrical.
-If the ribbon is too wide for the width of the browband, it will be impossible to make it work, trial and error and you will get a feel for it!
The way I learnt is by taking apart an old show browband and seeing which way the ribbon is threaded through. It is basically just like plaiting three pieces of ribbon but with a big piece of leather in the middle.