A shutterbug at Jordan High is helping Canyons District send wishes of a picture-perfect yuletide. A photograph taken by 17-year-old Shellby Carvalho shines bright on the cover of the District’s 10th annual holiday card, which is sent to local legislators, Utah’s members of Congress, and Canyons’ major supporters. The star of Carvalho’s photo is her snow-white dog, Cali, a 2-year-old Great Pyrenees and Labrador mix she adopted from the Humane Society of Utah. “Because my dog is white, I thought that was a symbol of simplicity and purity, which is what the holiday season is all about,” says Carvalho, who…