I haven't come across Rival Schools yet. I can cosplay as game characters too. (ryuichi fangirl)-I would love to see a pic of the character you are referring to.
I would do the violinist of Hamlyn thing, but I don't think cross-dressing is something I could pass off well. I look like a middle school girl.
Asuka plays violin and Rei plays viola.
Thanks for the chars. keep on submitting characters. I am still searching!