Step #1
Start the work by drawing three circles & a tiny curve line.
Step #2
Make four lines as shown & a rectangle.
Step #3
Make face & eye.
Step #4
Make outline for body.
Step #5
Draw bottom body shape as shown.
Step #6
Make tail.
Step #7
Draw antenna and rostrum shape as shown.
Step #8
Make lines over the body to create shell as shown.
Step #9
Make legs.
Step #10
Finally, make necessary improvements to finish.