Fighter and Support

I wanted to challenge myself to draw something with more detail and depth. I think I nailed the detail. Not so much the depth. Does anybody know of any really good inking tutorials, especially for metals and separating two all black things.

Pretty much, these two were supposed to sort of be League of Legends champions, in a way, since I didn't want to make their designs the same. The warrior/fighter of the two was inspired by a bunch of different armor designs. The "support" was inspired by the NW native clothing I saw in a museum. 

Traditional pencil and pen.
Designs and drawing by me.