Can you be more specific with what you're asking? Location suggestions? Aperture settings? Time of day? People, landscape, or wildlife? Zion is a great spot to take photos. My advice? Just start taking pictures.
Hard not to take good photos in that park. Everything is a worthy subject if you use framing/lighting/focus etc right....
Hi, Landscape will be great. The weather forecast is zero to 30 F for the week. I suspect that access will be limited on trails. Maybe even road closures. I have never visited Zion in the winter, so I'm not sure what to expect.
Get some good sunshine. Hike the narrows. Take pictures even when the light isn't so hot, then bump the saturation and contrast in photoshop. Tom