I like your currents alot more(they are hawt ) but its still nice, i agree on the focal point and the text could use some work..
Not sure. It blends incredibly well in my opinion. It's difficult to find at first, but if you look for it, it can be spotted fairly easily. One of your best in my opinion, but not your best I don't think. Great tutorials and great sigs. Not sure if you noticed, but the sig I have now - I used your tutorial for. Also, you've gotta update your most recent sig in your signature. =P
The colors of the render/focal are completely different than the bg and effects. I'd say a b/w version may work better.
define the focal and add one more texture to the bg but not in same elements as used already. will add more detail in foreground and aid depth..