Step #1
First start the tutorial by drawing rectangle & two circles for wheels.
Step #2
Draw an oval, triangle & three lines.
Step #3
Make base as shown.
Step #4
Make lines over the base as shown.
Step #5
Draw door and guard shape as shown.
Step #6
Draw a line, bell shape and shape for the back side as shown.
Step #7
Make missile like shape as shown. Also draw umbrella like shape.
Step #8
Make fan blade and plane like shape shape as shown.
Step #9
Draw various rods and small equipments as shown.
Step #10
Make tyres & three small ovals as shown.
Step #11
Draw umbrella and small equipments for shade as shown.
Step #12
Draw four ovals & 3 shape inside a circle shape as shown.
Step #13
Make hands, fingers & arms.
Step #14
Make face & hairs.
Step #15
Sketch little portions as shown in the drawing.
Step #16
Finally, make necessary improvements to finish.