Draw a long rectangle for the bus body
Add a slightly curved roof line
Draw a smaller rectangle at the front for the driver’s area
Add two large circles near the bottom for the wheels
Draw smaller circles inside the wheels for hubs
Add windows along the top half of the bus
Draw a front windshield at the front
Add a door on one side of the bus
Draw headlights at the front
Add a bumper along the bottom front
Draw side mirrors near the front
Add lines for panel details and doors
Draw a destination sign at the top front
Outline the bus with clean lines
Erase extra sketch marks
Color the bus as desired