Take your own photo. This one is of glitter laid out on a piece of white paper, laying on the ironing board near a window. I got really close so that it focused on one area and blurred the others. I could have taken it farther away but it didn't have that great of an effect. The only change I made was to make it a little darker because I wanted to use white lettering. Here is a download if you want to use it sometime.
Add your own text with no more than 2 font types. If you're not sure which ones, just use one. It's better to error on the side of understated. Vary the size of your font, it makes it more interesting with little work. Also, leave a little "white" space. In this case, it's really not white but glitter, but it's space that the eye can rest while viewing.
It doesn't need to be used for only New Year's Eve, it can be for any type of party in the future.