Well, this is my first costume ever. I was surprised on how well it was received by my friends and other SC2 fans.
It was made by modifying a ballerina costume of all things. The collar was made with a pattern I made.... I'm not too happy with it, but I try to hide its flaws. Gloves, shoes, tights, and sword were purchased.

Update: New sword and shield made of cardboard, baking pan, and styrofoam.