Blue lines are a common feature in Photoshop, and they can be used to help you create more realistic images. Here are three tips to show blue lines in your photos:

  1. Choose a dark color for your background. This will help to create a more realistic image.
  2. Use a light color for your blue lines. This will make the lines stand out more and make the image look more realistic.
  3. Use a gradient tool to create different colors along the line. This will give your photo an interesting and unique look.