I made 2 boxes of white cake and 2 boxes of chocolate cake for the the field. With white homemade butter cream in between the layers. I iced the whole cake with green tinted butter cream. I used a small star tip for the white lines and a larger star tip for the field grass which goes around all the sides also.
I used 1 box of white cake mix for the cupcakes and topped with chocolate frosting and piped on white lines for football sticthing.
The football on top of the cake was 1 box of chocolate cake mix poured into a small and med circle pan. I put white butter cream in between the layers and the carved the two cakes into a football shape. I frosted the cake with chocolate icing and used a med circle tip for football stitching.