well, it doesnt really looks like a sig for me...
its more like a double render...
and there is this spot (a little part of the render i guess) on the left that appears out of nowhere that is kinda buggin me ^^
i would highly suggest to take a look at some tutorials about the basics sig skills
such as
where to place your render, depth, colors, lightning-shadowing, contrast, flow (this one is very important) and once you get the hang of it
be sure to expand your technics with c4d, gradient map, clipping mask, vector, different brushes and play with your own creativity!!!
Keep it up and have fun!!!
