This is interesting. I like how 3-dimensional it looks. It really looks like I could touch it and feel the different textures and shapes of the character.
My suggestion for improving it would be to involve the background with it somehow. At the moment it appears as though the character is simply floating in space. I would suggest that perhaps a reflected neon glow effect would improve that, and make the edges look less harsh. I like that the character goes off the page at the bottom, so that we have the idea that there is more beyond the realm of the frame.
Anyway, Good job!
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