How much black cellophane would you be needing? A quick Google search turned up 5m and 10m x 80cm rolls of black tinted florists grade cellophane on amazon and ebay...
Cosplay in progress
Evangelion - need moar foam!
Pokeball costume - 90% done. Shiny Whimsicott backpack to do
Calibretto (Battle Chasers) - 25% done. Most materials gathered, stuck on torso armour though... -_-
Bonaparte (DTP) - 13% done. Some materials gathered. Planning.