1. Install Christmas tree and clean up (this is the hardest step)
2. Wait for dark
3. Mount the Canon EF 16-35mm f/4L IS USM Lens
on a full frame DSLR camera
4. Mount the camera to a tripod, zoom out, move in and level the camera (both pitch and yaw)
5. Turn off all regular lights, turn on all Christmas lights.
6. Take some test shots to determine that 15 seconds at f/16 (to get the starburst effect from the lights) and ISO 200 is right
7. Wait for the kids to go to bed (to avoid any floor vibrations)
8. Shoot until you run out of new composition ideas
9. Brush your teeth
10. Make one more attempt at finding new compositions.
My family and I wish you and your family a very "Merry Christmas!" May all of your photos be amazing!