Start by softening the cream cheese in a mixing bowl. I like to use a hand mixer for a smooth texture, then fold in the cranberries, crumbled feta, green onions, and sugar. The mixture should be creamy and easy to spread.
Lay out a tortilla and spread a quarter of the filling evenly, leaving about an inch of border around the edges. I find leaving the border prevents the filling from spilling out while rolling. Roll the tortilla tightly, then wrap it in plastic wrap. Repeat with the remaining tortillas.
Refrigerate the wrapped tortillas for at least one hour. Chilling helps the filling firm up, making slicing easier. Once firm, unwrap and cut each roll into 1-inch pinwheels. I usually get about 8 slices per tortilla.