Well, I love tattoos and have been drawing them on my binders in school since I was little.
There are many teachers who could ruin you. Before you know it you could be a pale copy of this teacher or that teacher. You have to evolve on your own.
Revising a screenplay is much more frustrating than revising a song because you have to read through the entire work again while you are changing stuff. It is a lot easier to edit a song.