Pen, paper.

1, prepare a pen and paper, and draw an ellipse first.

2. Then draw a bigger ellipse outside the ellipse.

3. Next, draw a big oval with wavy lines.

4. Then draw two arcs on the left and right sides.

5. Draw a wavy line under the left and right arcs.

6. Then draw a vertical line segment between the upper and lower wavy lines.

7. Draw a small line on the top of the moon cake, so that the beautiful Mid-Autumn moon cake will be painted.