Step 1: Draw a square first.
Step 2: Then draw a square inside, with a little more space below.
Step 3: Add a square inside and draw a small rectangle on the right.
Step 4: Then draw three round buttons at the bottom.
Step 5: Draw three small square buttons and diagonal lines in the middle of the circular buttons.
Step 6: Draw two feet under the microwave oven and draw the glass texture with diagonal lines.
Step 7: Finally, paint a nice color, and the microwave oven is finished.