Gray Scaled tags has never really appealed to me. :c
As for the text, its a little unfitting; perhaps make the quote smaller and put B.O.B above it? Do something creative with it.
I also dislike the way you decided to put a white splatter at the side of his face. It doesn't flow well with the feel because the feel of the tag is nice and soft.
The backgrounds needs a little bit of depth and contrast as well.

Though overall, I like the use of clouds. c: