Great Lakes Garrison & Base

Sorry I'm new to all of this. I don't have a lot to go on but what I've been looking at from pictures. I'm sorry.

Thank You that helps ^^

I really really wanna do this costume but I'm trying to gauge how hard it is going to be and the best materials to use. So anyone with any advice would be amazing from someone who knows or has made the costume before. Thanks

Neysa