From YPPedia

Portrait Background Competition

The Portrait Background Competition is a monthly event open to all players. Entrants are asked to create a unique piece of digital artwork to be used as a portrait background in the game, usually based around a given theme. The winning artwork is available as a limited-edition item in the game.

Winners: June 2008

Ickessler's Distillary

Nordenx's Iron Monger

Albini's Shipwrightery

Winner: April 2008

Phillite's Spring Festival

Winners: March 2008

Damayi's Lucky Pirate

Benzene265's Window