Because I have tried to do them myself before but sometimes their some stuff that are hard to model. I thought "I bet theirs others who know more experience with this kind of stuff than me, so why not ask for help". Also I'm on a deadline and I wish to at least finish the infantry first til the end of the week, so I decided to use one of the hats from N&S because it looked close enough from one of that hats in one of the images.