Hi guys, I'm currently in the process of putting together a New 52 Joker Mask out of cardboard, plaster bandages and air drying clay. It was a bit of a last minute thing and it's the first time I've tried something like this so excuse the questionable quality and schoolboy errors.

The thing has turned out a bit heavier than I expected and the bottom layer appears to be getting flimsier as I add more clay for detailing. Any tips for strengthening it/reducing potential cracking /adding more support ? I'll be strapping it to my face on Wednesday. Thanks in advance.

The thing has turned out a bit heavier than I expected and the bottom layer appears to be getting flimsier as I add more clay for detailing. Any tips for strengthening it/reducing potential cracking /adding more support ? I'll be strapping it to my face on Wednesday. Thanks in advance.