Help with Render

[Chaud]

Hi guys, well I'm trying to get better at drawing and rendering, and I finished the lines of a art that I enjoyed, but I have no idea of how to render it, I've been spending some days rendering it and it just look like shit so I delete de render. Can someone help me with how to start or some easy tutorial for a noob, here is the draw right now.

Any help with the pose is also welcome. I'm pretty happy with what I got but I know there is always ground to improve.
Oh and one thing I forgot, even though I think I'm not prepared yet for something like that, the rendering process I'd like to do with this piece is something like "Last Man Standing", with lots of details.