I strongly recommend Samuel Lee of Prince armory . He can make almost anything. His prices are fair for the amazing quality that he puts into his work and he loves doing custom stuff. Expect to pay a couple grand for a full suit.
As far a learning the craft, check out youtube. There is a guy that has some leather mask making tutorials that show you how to wetform leather and some painting and dying techniques. Trust me, I am still learning on every piece I make.