Let’s take a look at the original pictures and renderings first: 
After processing the original image
1. Let’s first use the liquefy tool to make the eyes bigger, as shown in the picture.
2. Use the pen tool to outline the double eyelids, save the path (it will be useful later), and convert it into a selection.
3. Select the burn tool, and the parameters are as shown in the figure. Try to deepen the area as close to the edge of the selection as possible.
4. After deepening, you can cancel the selection to check the effect. If you are not satisfied, you can use CTRL+Z to return to the selection and process it. When you are satisfied, use CTRL+SHIFT+I to invert the selection and prepare to highlight the double eyelids. We select the dodge tool and also apply dodge along the edges of the selection to paint highlights.
5. The effect of double eyelids has come out. The treatment method for the right eye is the same, so I won’t repeat it.
Take a look, it seems like something is missing? By the way, eye shadow should be added, so that the effect will be more realistic.
6. Go to the path layout, convert the path you just saved into a selection, and feather it by 2 pixels. Create a new blank layer, set the blending mode to color, and use the brush tool (the color depends on your preference) to adjust the corresponding parameters and apply it along the edge of the selection.
7. Done! If you want a better effect, you can add eyelashes, you can use it freely.
