Avatar 4/5: case closed is a great manga.
Sig 4.8/5: I like the drop shadow and the slight emboss effect, I also like the crosshatch/paper texture you have with the backdrop. The only thing I don't like is the placement for the text, otherwise its nigh on perfect.
@ who ever passes judgment on me:
Please take into consideration that I used Gimp, I am slowly getting better with it, but I am accustomed to Photoshop CS.