excel computer course london - Animation in excel

I want to create an animation in excel based on an advent calendar. I have created a routine to run that I want to be called when the user clicks on a "door" in the calendar. the proceedure then runs and shows the result in the space where the door has opened. (it's the same proceedure each time)

Was thinking I could create a user form with 24 buttons as doors but can i then change the background of the form to look like an advent calendar? and can i get the button (door) to be replaced with the result each time?

Or is it something i could do in paintshop or something like that?

Thanks

Jen