Step #1
Start the work by drawing three ovals & a curve line.
Step #2
Draw legs & tail.
Step #3
Make front legs & head.
Step #4
Make front side lower legs & square like shape as shown.
Step #5
Draw legs below the upper body.
Step #6
Draw legs below the middle body.
Step #7
Make shell on the lower body.
Step #8
Make backside legs.
Step #9
Enhance tail as shown.
Step #10
Draw tiny rounded shapes all over the body as shown.
Step #11
Finally, make necessary improvements to finish.