Stars are a classic symbol of the holiday season, and they lend a lot of festive appeal to this engaging background.
Over a dozen star ornaments hang down on thin threads over a blue-and-white field. There's a nice crystallized effect thanks to the lines and shaded sections that run across each of the ornaments, and each star has a slightly different shape.
There are also a number of white stars and snowflakes hidden in the white top-half of the background. Towards the bottom, the dark blue turns almost black. There's a lot of detail here, and it's an ideal choice for sending a holiday greeting.