Choosing colors for a background is important because it will influence how your image stands out. Since we are going to be creating a vibrant glossy box, let’s use a dark background. Create a new document, mine is 256×256px for the purpose of this tutorial.
Set a dark gray, #363636, as your foreground color and black, #000000, as your background color.
Once you have your colors selected, grab your Gradient Tool and create a radial gradient near the center of your document as shown in the image below.