Nice doctor who piece, although I think this is one of the earliest doctors from before I started watching it which was the 2005 series.
I like the use of sprayed strokes in this piece. They work especially well on the background and in the depiction of energy coming from the wires. The highlights are also well applied given the light sources, but it does look like the lines between the fingers on his left hand might be a bit too dark.
Although I do like the image I have never been a huge fan of including text on art, unless the text itself is the art. Of course that is more of an opinion than a critique.