There are a few things you need to know before starting:

  1. The image you want to create must be in RGB color space.
  2. You can use the Rectangular Marquee tool to create a rectangle around the image, or use the Polygonal Marquee tool to create more complex shapes.
  3. You can also use the Lasso tool to select specific areas of your image, or use the marquee mode to select all of an image’s pixels at once.
  4. To add text, you can use the Text Tool or the Pencil Tool.