How to make a teenage mutant ninja turtles costume?

Me and 3 other friends want to be TMNT for halloween. We are all in college so we dont want to buy some $200 costume from a store. How can we make them.. any tips?How to make a teenage mutant ninja turtles costume?
Green sweatsuits, fabric in appropriate colors (buy t-shirts from a thrift shop and cut them up) green face paint (or, for proper proportions paper mache some masks and paint them) for weapons nunchucks, swords and sais can be purchased at a dollar store, for the staff go to a hardware store and buy a wooden dowel. For shells find some of those round sleds in green (or paint with plastic-friendly spray paint) or look around for those turtle sandboxes (might be tough to find this time of year though) poke some holes and attach with rope.How to make a teenage mutant ninja turtles costume?
I am going as Michelangelo and got all my stuff at the dollar store. I bought two bristol boards (yellow and green) to make the front and back shell, cut into ovals. Then be sure to draw or paint the pattern of a shell on them. I am using orange garland instead of fabric, but fabric works too for the head piece. Face paint is a necessity. I am using pantyhose as a belt. Just cut them in half and attach where you find appropriate to tie it. Then green yarn to attach the two board and sling over shoulders.
Target has TMNT costumes for 20 bucks each....