That does have helpful info on the vest, nice to see it all in one place, thanks!
I certainly don't already know the sewing process on the collar, I believe what I had mentioned was that I could do the ribbing with faux leather and my foam material I already have. Sewing will be trial and error, as long as I can find some suitable faux leather, my mother said she would help me figure it out this weekend. She is far better at sewing than I, but hasn't made anything like it either. I will try to take some photos of the process so if it works out I will have them.