Dear Jack Frost,

Thank you for the lovely pictures you made for us. 

They are beautiful.   An enchanted forest of icy trees grace our windows.

 But do you think you could keep your future canvases on the *outside* of the windows?  The children are more than happy to come out and play.  You must know that those beautiful delicate paintings in ice will not last long once the stove is rekindled and the sun shines bright. 

Or perhaps they are all the more beautiful for their rare, fleeting presence.  Never mind, come anytime you like.