Something that lasts longer ...2 months minimum. On which I can paint write....and looks just like paper. Cant seem to find a recipie for Wafer paper and frosting paper online.
The only edible paper that I know of is rice paper. Check online for options...not sure you can draw on rice paper it's like cellophane.
Check with your local bakeries. They use something like this frequently. Perhaps you can purchase some 'paper'.
Maybe you can figure out a way to use filo pastry in a pinch?
Must it be homemade?
Bakery supply houses and several retailers sell various edible papers online.