You draw really really well. It seems you put a lot of work into the hair and face. Though I think the chest/top thingy could use a little bit more details. But honestly... I'm not really sure it looks like Rikku. I mean, the hair looks the part but not the face. Also I sorta think something makes her look a bit masculine, I'm not sure if it's the chin or the neck... but that might be just me.