Step one:
First draw a square.
Step 2:
Then draw a circle inside.
Step 3:
Draw two vertical lines below and draw an inverted triangle.
Step 4:
In the circular dial above, click eight small dots and pay attention to symmetry.
Step 5:
Put a small dot inside and draw the hour and minute hands.
Step 6:
In the lower part, draw another layer of lines and draw a circular pendulum inside to connect them.
Step 7:
Finally, apply a nice color and the wall clock is ready.