Parameter setting of the sketchpad: here we choose the general sketchpad, name the sketchpad, choose RGB color, choose PPI as 300, and create the sketchpad.

After creating the sketchpad, we can put the pattern diagram and pictures into it for typesetting. Let's put the pattern in first.

Next, we will copy four pictures. Remember to select all the pictures and reduce them by the same proportion when you come in (press and hold shift to reduce them by the same proportion).

Expand and place each picture.

Embed each picture to prevent it from being lost.

We first center the picture vertically.