How to make a fake plastic surgery?-iCarly perhaps?

ummm okay i know this may sound weird but my cousin a nd i have been really bored this summer and we want to try to change the way we look. you may better understand this if you have seen the new iPart with Victtorious, like the part were the iCarly team gets transfromed by Spencers ex-girlfriend. Wow that sounds really dorky. but i am kinda artistic sdo it might work out if anyojne would be willing to tell me how. I just want to know how to do the nose. Well thanks for reading and understanding this weird message.!!!♥