It looks to me that you need 24 complete blocks with pies in them, and a quarter of a tart in each corner. There are another 7 down the right hand side that are partial, but might be whole ones and the pic has cut them off. Ditto across the top with 4 more.
I would make a good start on them first, and worry about the edges later. You could possibly make more whole blocks and cut them in half for the edges at the end.