I tried to get depth by bluring all of it and then just erasing around the focal point. I like the outcome
Whoa, in my opinion that's hella nice tag. The white background really works and so does the blurring, I really can't think of anything bad to say it just looks awesome! Can I has?
Personally I like what you are going for, I wouldn't toss any c4d's in it would ruin the effect, I would try and keep the white background going but do something like you did with the Akuma bg in your sig.