I did this costume awhile ago for superhero day at my school so I will re-do the steps in a mini version (using paint and other editing sofwares).
- Ninja turtle beanie.
( I got mine at spencers but you can find plenty online, ex: http://www.ebay.com/sch/i.html_nkw=ninja+turtle+beanie+hat&_frs=1&_trksid=p3286.c0.m359)
- Two poster boards (yellow and green).
- Plastic sword
- One black sheet of paper
- Glue or tape
- Green washable paint (Enough to paint hands, arms, legs, and face as needed)
- Orange and black paint
- Green shirt (preferably same or almost same green as paint)
- Black shorts
- & Awesome Karate Skills ! :D
Step 1: Making the shell
Get the green poster board and draw an oval, the size of the oval depends on the size and height of the person.
Take a good estimate or measure before cutting it out.