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