What did you find most challenging? Any other obvious things to watch out for?
At the risk of sounding too obvious, navigation of the map and compass variety can be a challenge if the ground is covered in snow. You will need sunglasses, maybe gloves if your cabin heat is as ineffective as mine, and you might think about changing out of wet shoes once you are in the aircraft. At least have warm clothes on board. My cub is hangared, but it is surprising how quickly hoar frost can form when I pull it out. Some wing sections can be quite unhappy about even a light coating of rime. Mostly gliders and other glass types. Out of interest, what are you flying?