I'm going to try to create a batman beyond costume replica, but only if it's not too expensive. It probably won't be cheap though. Basically I'm going for something like this design here, I'm thinking about the face mask and the idea with him always being depicted as having a regular mouth that's a part of his costume would be that he has an open exposed mouth like regular batman, only he puts on paint makeup over his lower exposed face, mouth and lips.

It will be the best batman beyond cosplay ever done. I don't know where to start, I think I will need a 3D printer most likely. I'm nit even sure what material you would use, it's not quite metal, but it's not leather or clothe either so what would it be?