Hello, there are two methods and effects to add LED light strips to a two-layer ceiling. The operation screenshots are as follows:

Method 1:

1. First, draw an inner ceiling area, select that area, and modify the distance from the top to create a circle of LED light strips.

   

2. Select the area, open the Edit section to add lines that form the shape of a double eyelid structure

              

3. Return to the 3D view, search for white covering material, and modify it according to the position of the line.

   

Method 2:

1. Draw a rectangular area and create the two-layer shape by using the offset method.

   

2. Select the inner area, click on the Edit Section option in the right panel, and add light lines at the position of that section.