Ahaha that's awesome! xD; I don't think I ever drew on stuff that I had to turn in but it was always embarrassing when people asked to borrow my notes in HS because the Organization was drawn aaaaall over them.
Um... the pairings I don't like are... Marluxia/Vexen (hate hate hate hate hate), Sora/Riku (though it's okay if it's Sora/Riku/Kairi... idgi XD), and... um... I think that's about it. o_O