Draw a long oval shape for the airplane body
Add a pointed nose at the front
Draw a tail section at the back
Add two wings on the sides of the body
Draw a vertical tail fin on top of the rear
Add horizontal stabilizers on the tail
Draw engines under the wings or on the sides if needed
Add cockpit windows near the front
Draw cabin windows along the body
Add landing gear if desired
Outline the airplane with clean lines
Erase extra sketch marks
Color the airplane as desired