the trails are the only part that really interest me at all
The rest seem...well...horrid.
I really expected more from someone who made such a pwnsome bomberman head ;o
Also, the trails are rather full, even for my tastes.
And the prices are really high for this.
An easy way to improve it is to use the bump mapping filter.
I used to use it a lot. Then i grew to hate the look. But Mine was used on top of already shaded textures
Using bump mapping will give yours a sunken-in look, or a plateaued feel.
I bet if you did that, people wouldn't be complaining so much about the price