I feel like an idiot, but I don't know how to get the picture under the door when you are locked in the bedroom in Sinclair's Mansion. I've tried all the hints, but it wont go under...What have I done wrong? Can anybody help, please!

Have you taken the picture out of the frame and removed some of the floor tiles?

you'll need a little something else to move the tiles too.

Try the nail the picture was on.