4/10 - The "stamp" isn't transparent in the open areas, making it look weird and unfinished. The crop is too close up and centered, making it plain. It looks like just another texture-like image was overlayed on top of the base image to give it an effect, but the lines cover up the image oddly.
The text colour is too close to the rest of the image, making it hard to see; It's also oddly placed and a better font could be used to make it pop more. (Regardless, perhaps reduce the size, move it to the bottom, and add a one or two pixel stroke to it?)
I like the idea and stamp sets can be very cute. If you put the image on top of the background, it will pop more. Maybe recrop and move it around, as well. It's not a bad start, just needs so work. Keep up the good work. :3
The Spook: Thank you very much! <3 It's funny you found humour in the text -- that's the character's name! She's Sir Integral Fairbrook Wingates Hellsing, or Integra, or Hellsing. :3