I used the Wilton castle cake kit for this Princess Castle Birthday Cake. It was for my daughter's 5th birthday. It took 8 hours to do, but it was worth it.
I pre-made the flowers with flower cut out and pressed in the middle with ball tool to curve the flower. I put a dot of white royal icing in the middle and put aside to dry. I actually made extra and used them for christening cakes later.
I covered the towers in pink icing and rolled in crushed edible glitter. I surrounded the windows in blue buttercream and dabbed them with glitter.
The cakes were covered in pink buttercream and sprinkled with glitter. The top cake was supported by dowels and it was on it's own cake board. The most time consuming was piping the leaves and attaching the flowers.
I had difficulty with the icing breaking off the plastice very easily. Also not the easiest cake to transport, I had most of the turrets either falling out or lean terribly by the time we got to our destination. I was lucky that I had prepared a repair kit to take with me.
If I did it again I would not attach the turrets until we got there, this would mean I would have to allow an extra hour or so to put the leaves and flowers around the base of the turrets but it's better than the whole thing falling apart.
I prepared four 8" square cakes for this Princess Castle Birthday Cake. U then cut off the dome of each cake layer to create a flat even surface. Place the first cake layer on a serving platter.
I made Buttercream frosting (pink). Using a spatula, spread about 1/3 cup of pink frosting over the top of the cake layer. Invert the second cake layer and place on top of the frosted cake. Spread another 1/3 cup of pink frosting on top of the cake.
Invert the third cake layer and place on top of frosted cake. Push down on the cake to make sure the cake layers are level and stable. Using the serrated knife, cut the fourth layer into four quarters.
Spread a small dollop of pink frosting in the middle of the layered cake. Lay one of the quarters on top. Spread frosting on top of the quarter and place a second quarter on that. Again, spread pink frosting on the top and lay the third quarter on top of the second one.
Cut the last quarter into quarters again. Make a third tier on the cake. Spread frosting on the top layer. Place one of the small remaining pieces on top. Repeat with another layer of frosting and another small remaining piece of cake.
Frost the entire cake and decorated with candies and wafers for doors and windows.