3. Add the Windows
Just above the wedge, draw a slightly angled rectangle. Draw two rectangles for the cab windows. Add more rectangles for details on the engine side. Draw a small curved rectangle at the bottom of each bell. Add an arched shape at the front of the car and at the top of the smokestack. Add rectangular shapes at the back end to create the device that links train cars together.
On the next page, we'll add the wheels.