Pretty good for your first sig. Use smudging more, and try to blend in the c4ds better. Other than that i say 4/5 for your first.
You also need a border. Just make a new layer and go to Image>Apply Image.
Then go to the layer u made and go to FX, and make a stroke on the INSIDE. 3px black.
No i think V1 because the render blends in, It looks like you tried hard for your first.
hardly any body tries this hard for their V1 but it needs some work, its pretty plain and simple. G/J though.