http://phantasystaruniverse.jp/event/itemdesigncontest/

In preparation for Japan's upcoming AOTI supplemental update, an item design contest will be running from March 26 through May 7. There will be two categories to this contest: weapons and clothing/parts. From each category, a first, second, third and honorable mention winner will be selected, and the winning items will be featured on the official site as well as added to the game. (You must have the PC version to take advantage of the new items; they will appear in the PS2 version as default weapons/clothes/parts.)

Once the site updates again next week, a template will be added that you can download for use with designing clothes and parts.