Very nice. :3 I like how you have the position of the arms, and how the shirt comes up slightly. The doggyness is a big plus in my eyes too. xD
Technically it's good. However, I hate animal eared people, like poison, which incidentally I've never tried. The sword also could use some reforging.
D: Dog ears are amazing. Though I do agree with the sword point, no pun intended. (God, that sounded so lame. ._.) Try to have the sword in proportion to the body; most katanas (which I'm assuming it is) are anywhere from two to three feet long. I know it takes practice to draw the "perfect" sword for your character, but still, great job. ^^
Woah, really really awesome picture. Though, his facial expression seems kinda vacant. x__x I dunno if that's on purpose or not though, so besides that it's really really awesome. Good work! Keep up drawing, you've obviously got a talent for it.