I found this picture to be just decent. I guess a samurai cop is a pretty original idea. I just didn't quite understand the appeal. It would have been nice to have a background. It's cool to see someone with both a gun AND a sword. He has a pretty good expression.
The long hair seems to work well for this design. It just seems like you've made much better pictures. I don't quite recognize the style. Then again, I'm not THAT familiar with you. You use good shades of blue.