You'll need both halves of the walnut shell to make a flamingo. Trace the shape of one half of the shell onto cardstock. Continue into the shape of a flamingo and cut it out, trimming a bit extra from the body edges so the card stock doesn't protrude from the nut edges. Rasp off a little of the shell's inside edge where the legs will come out so the shell halves will still fit flat together. Bend a piece of stiff wire into a narrow V and glue to card stock body. Then glue shell halves together with card stock body and legs in between. When the glue has dried, pain entire bird pink, add details in black.