Art Postcard - Survey Question

It's nearly time for me to do another art postcard.

I need to make a decision to either use one of my recent images or to create a new one.

So here is my poll:
(Note: It can't be of commercially recognized or copyrighted designs, characters, or images)

Is there a recent image that I've done that you think would make a great postcard? And if so, which one?


Should I make a new design? And if so, of what?