Replace a fringe?

[Paco500]

Thanks for helping here.

Here are two photos that will hopefully illustrate how it's put together. The 'fold back' (? know know proper terminology) is even all the way down the apron, and the fringe is two rows. I think in my ideal world, I would like to insert a contrast colour between the two rows of existing fringe.

As far as a diagram for the contraction of the kilt- can you point me in the right direction of an online resource? I suspect the issue is my google skills rather than anything else- but I've not found a diagram that shows the constructions of the fringe. The YouTube videos I've seen that address it seem to assume a base knowledge that I don't have.

Thanks again.