By Jackie Grant & Ryan Merrifield A teenager who acted in thedisastrous Willy Wonka Experience says it was “life changing”. Schoolgirl Felicia Dawkins, 16, played the part of a villain called The Unknown in the shambolic Glasgow show which has made headlines around the world. Hundreds of people paid up to £35 a ticket for the event that proved to be massive let-down after visitors said it was “little more than an abandoned, empty warehouse”. Glasgow girl Felicia was cast as Willy McDuff – seemingly inspired by Willy Wonka – before opting for The Unknown, an evil chocolate maker who lives in th…