Create a Halloween costume using tape sculpture

Step 10 Finishing touches

Next, the mouth shape is cut out, with heavy scissors to get through all those layers of tape.  A few more test fittings were needed to get the mouth placement right so that the wearer could see out through the mouth.

I then made shark teeth out of a thin sheet of white craft foam rubber.  You can get this at a fabric place like Jo-Ann, or a craft store like Michael's, or one of many big box stores that carry craft supplies (I got some at Wally's once).  I could use paper for the teeth, but the thin foam rubber sheet won't fold or bend, and won't make paper cuts.  Once the teeth are cut out, they are secured to the head with more packing tape.

I decided to just paint on the eyes and nose holes (actually used a Sharpie).  The shoulder cutouts took up the area where the gill slits would go, so I didn't have to paint them on.

Success!  Just remember to bring the packing tape with you as you go trick-or-treating, in case you need to do some quick repairs to the shoulder straps or the teeth or something.

The last two pictures below are of last years costume, a T-Rex. In that one, the 11-inch balloon was placed with the stem facing forward, so the head's snout came to a point, the top of the head was built up with cardboard and tape, and the eyes were made of a plastic foam ball cut in half.  The whole thing was supported by the child's bicycle helmet, hidden inside and secured to the rest of the head with black zip-ties under the tape.

Happy Halloween!