Kermit

Kermit is a frog.  

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There is a frog on the fireplace.

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There is a lock on the wooden, planked tower to the left of the frog.  Use key to unlock it.

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If nothing happens or you can't find where to put a key, stand in the dressing room that has mirrors in it.  Face the fireplace, reach up and find a button under red weeds on the top left hand corner of the door entrance to the dressing room.   Search around where the top of the door frame meets the wall of the door frame on the left hand side,  there is a buttonunder leaves.   Feel for a button.  Push it.

If a door didn't open, scroll down. 

After you hit the button, push the mirror in the dressing room.  It should open a door.