Smurf, when you're giving feedback, it's good to determine the level of critique you should give before actually giving it.
Ninja, as for your work, it's not bad for your skill level. Really, I'd just like to see you doing more in your sigs now. Use brushes in different colors as effects, or smudge some brushing/pentool lines for effect, even look into clipping masks and stuff.
Here, take a look at these tags and try to take some ideas from them, and see if you can't incorporate some of that into future tags:
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^^^Using brushes and smudging to make most of the effects, and just playing around with clipping masks.
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^^^Using gradient maps to adjust the colors into something that works together well.
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^^^Using the smudge tool to make tons of effects.
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^^^Using Dodge/Burn tools and different filters to alter the tag's brightness and look.
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^^^Using multiple layers of effects to give an illusion of 3D in the tag.