Hello! Thanks for asking!
Begin making a mold with a piece of paper giving it the big shape of the stadium, you’ll need to buy RKT sheet (for sale in GSA), saying this, the base of the stadium is all cake and the wall is RKT (once you put the RKT all around the cake…you’ll need to round the edges using a knife!)
For the engrave, you just need to put a piece of fondant with the shape that you want and then cover it!
I hope I was able to explain everything correctly to you!
K'precious Cakes, Wellington, FL
