Version 2 for sure
I remember syn explaining the rule of thirds to you, so let me give you a quick example of what you got here
With the rule of thirds you try to give you art 9 equal parts like this: (normaly u do that in your imagination)

As you can see you place your render to far of the right,
next time try to place your render on one of the vertical line's
You can also see that your render is missing a part of the head. next time try to place the head on the top cross of the vertical and horizontal line.
I like what you did with the effects, And the depth seems fine to me in this one
But it might be a bit empty, try to add soem nice lightning and make some spots darker with the brush tool. and try to go with tha flow, becouse un the top left i see a fractal/bubble that kinda distubs the flow there..

U realy improving fast kinetics