I absolutely LOVE the big, fuzzy, out of focus Christmas tree lights as a background for any photo. It almost sounds like I know what I’m doing, when I say that I’m playing around with aperture and bokeh. Honestly, I don’t even know if I’m pronouncing bokeh correctly. All I know is that it looks really pretty when you follow the directions on real photographers’ websites.
Here is a link that tells you the secret ingredients for photos like these.
Cheryl also listed a few links in this post.