Story Ideas?

Okay so I have a few ideas for a story I want to post up here.

1.) A girl who lives in an insane asylum, but she’s not actually crazy because she was wrongfully diagnosed. She soon makes a friend there and they hatch a plan to escape.

2.) My second idea is about a guy who finds a diary in an abandoned house. He soon becomes obsessed with whom it belongs to.

3.) Basically a band biography on how they made it to the big time, and their journeys on the way there. May include drugs, sex, and rock’ n roll baby.

Yeah so their not that good… may be because I’m slightly overtired.
But tell me what you think of them… maybe some advice on how I could make them better.
:)