ok does anyone have sum info about how i can make the molds of the body parts??

[yungblaze142k6]

ok does anyone have sum info about how i can make the molds of the body parts?? and sum1 told me that the materials neded to make the mold for my helmet alone is 300 is there an alternative is there an extremly cheaper way than that possibly lower than 200 and if i decide to make it outta paper can i sculpt the outside with clay and make a mold from that? if i cant do that can i get rid of that awfull boxy look of the helmet or any other part cmon guy i need sum input on the many different ways i can do this project