Yeah I get what your saying and shall take into consideration and yes the lighting in the signature was done by me, thanks.Seems too basic in my opinion. A few random circles around a render which has been duplicated and a basic background. Is the lighting on the sig yours though? If so the light source itself is good, but I'd like to see some better shadows
I like the flow, and you did a good job with the colors in this. The part that makes a vector tag awesome is the composition and this is where you are lacking. You should consider taking a look at the rules of thirds and the golden ratio to learn how to position your effects and focal.

