Very nice! Kakashi is my favorite Naruto character, so I love to see fanart of him, and his favorite book! How can you not love Make Out Paradise (going by the English title). You did a great job of capturing the disinterested expression on his face, like he had when he was trying to get Naruto, Sasuke and Sakura to attack him in the manga.

The style you have here is also pretty nice. It simplifies his outfit, but you kept the key elements, like his headband, the pockets on his vest, and the bandages wrapped around his feet. It's very nice.

Now, his pose looks a little stiff, even for Kakashi. I think it's because his arm holding the book might be a little too far out for him to really seem relaxed, even though the hand in his pocket seems to be trying to convey that feeling. Also, I feel his left leg should have a little more of a bend in it.

Other than that, excellent image. :) I'll be looking forward to seeing more of your works!