Hate to step on you, but as you said "I just created".... unfortunately, that's also what it looks like - just thrown together.
Your images need to be larger, your categorization/nav bar needs to stand out and place the font on 3D buttons. There needs to be a spectacular image as backdrop, otherwise you're losing "buy-in" from users, after all, you're having a wallpaper site, if you don't have a wallpaper that knocks the user's socks off, who will?
the wallpaper of the week should be a wallpaper of the day, or even better, when you have enough content, you can switch the wallpapers out multiple times per day.
the masthead/top of the site needs to have the faces centered and they should also be a lot larger and more prominent on the site, after all, they create your theme and speak to your target group.
Also, the
Welcome to our collection of Naruto Wallpapers, we offer high quailty desktop wallpapers of all naruto anime and manga fans, in different shapes and sizes! Sasuke, Gaara, Neji, Sakura, Rock Lee, Ino, TenTen, Jiraiya, Temari, Itachi, Kankuro, Kakashi, Tsunade, Shino etc. we even have Orochimaru wallpaper!
i almost needed a magnifying glass to see it,...and i have 20/20 vision

enlarge your mission statement and cut it down to the essentials, 8 keywords or less. what you've written there, should be the intro in the 'about us' section.
thats it for now,...should give you something to do. AND! don't take anything personal, you've started good, just totally from a programmers perspective not a marketers!
