Faux Leather Bows How To Make Them Firmer

So I have not used every single type of faux leather on here that I have on hand but I did use the thinnest one I do have on hand as well as a few others. I have heard to make them firm to try craft starch, heat n bond ultra, and as well as HTV (heat transfer vinyl) I have used all except my vinyl I like using that for the tops of my bows esp cheerleading ones but that will be for another video.

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