Found some more fan made KOFXIII style sprites today on Enlightend Shadow's DeviantArt page, they're pretty well made and in particular i quite liked the alternate costume design he made of Kula.
Also in case you were interested in making some yourself, he also has a tutorial on his page showing you how he makes them.
There are actually a few more if you check out his gallery. (Some KOF, some Capcom, and some personal designs.)
Also whilst on the topic of Deviant Art i also came across a cosplayer called Mistress09, who has done an awesome Kula cosplay.
Check out her DeviantArt page for more. :)