Fold the teeth and side fins down

Fold the tail up

Fold the 3 body panels down their center so they form a "V"

First insert the largest panel at the rear of the body as shown

Then attach the other two side panels as shown

Attach the shell to the body as shown. Be sure snap rivets go through both shell and body.

Attach the shell to the body with 4 rivets as shown below

You have finished building your robot!