I need t-shirt designs

I am starting a T-shirt company called Bohemian. I would like to create shirts that have designs on the back similar to that of Patagonia and NatureBacks, which often have mountains or the ocean on the back. I also want shirts to have designs on them following the Bohemian clothing style (Aztec symbols like arrows and triangles). I have attached some aztec symbols that I'm talking about, as well as some t-shirts that are similar to what I would want.