This is a question with answer options. Goal: What is the best way to apply frosting spray to a glass window?

Which of the following methods is more reasonable for accomplishing this goal?

Available choices:
(1). Spray the window using large, back and forth motions to cover the surface evenly. Hold the frosting can at least 12 inches from the window's surface to avoid splotches and runs.
(2). Spray the window using small, back and forth motions to cover the surface evenly. Hold the frosting can at least a foot from the window's surface to avoid splotches and runs....I think the answer is
(1).