PvP Arena Needed

I need somebody to design a PvP arena. You will build it in a single player world (creative) and then send me the world file so I can use it. If this is not possible, screenshots may be used, however that lessens your chances of being chosen. Why should you do this you ask? Well there are some amazing prizes involved:
1. 15,000 EcoDollars
2. Name of arena named after you
3. Ability to call me your fourth best friend.

Size and Height: Should be from 50x50 to 125x125, must be symmetrical (2 sides being the same), color coded would be nice, cheap blocks must be used in most areas, and can be up to 30 blocks high.

Code:

[color=#0000FF]IGN:[/color]
[color=#0000FF]Name of Arena[/color]
[color=#0000FF]Link to map/screenshots[/color]
[color=#0000FF]Do you understand you may not be picked?[/color]

 

Reserved for Winner