1. Draw a large upside down C shape.

2. Connect the bottom with a curve.

3. Start the door with another upside down curve.

4. Draw the inside curve of the opening.

5. Connect it to the dome.

6. Draw the curved horizontal lines as shown.

7. Add alternating vertical lines as shown.

8. Finish the details to the opening and add a background.

9. Trace with a marker and color with crayons.