Once again, I think the most difficult part was figuring out what to animate. After staring out the window for ages, I finally settled on an idea. I have a bird feeder in my yard, but it's not the most picturesque view at this time of the year.
And it has been very cold this week. Cold enough for snow, but we haven't seen a flake. So I tried to imagine a slightly more evocative scene and came up with this.
I didn't need to puppet warp anything for this animation, but it was a great technique to learn. I hope to give it a try soon, once I stare out the window long enough to finally figure out what to animate next.