First grab your green cupcake liner and flatten it out with your fingers.

Put some glue on the back of your flattened cupcake liner piece and glue it onto your card front.

If the edges are sticking up, add more glue so it really sticks down on the paper.

Next up - the mask embellishments. Grab your choice in color cardstock paper, along with the scissors.

Cut out a a mask shape for your turtle friend.

Now take your black marker and draw on a simple mouth shape.

Finally, take the wiggle eyes and secure those in place as well.

Write some "punny" NINJA TURTLE sayings on the outside and inside with your Sharpie marker.