pixel font in the middle seems out of place. The space scenes are alright. The navigation bar could use more defing of the buttons, like seperate buttons for each word.
I think you need some sort of device that screen captures it. Thats how magazines do it. You could always just take a camera and take a picture i think. :wink:
Text is kinda unreadable, could be bigger. The kirby is good. But the shape isn't so circular. You could use some outside antialiasing. But you can probably always avoid outside aa by making a better shape. Pretty good avatar besides that.