/cgl/ - Cosplay & EGL

How hard would it be to make my own cloak and hood with the hood being a separate piece of clothing. I'm looking to be a necromancer. I already know how to do the makeup and the props I have in mind, but was wondering about the cloak or robe itself. I am trying my best to do this all hand-made. I want it to be pretty plain, with just a slightly lighter color trim at places like the neck arms and hem ( i thin that's what the bottom is called?) Alternatively if it's too difficult for a newbie How would I go about making a coat like this, or even just making a regular coat look more like this?