The main icings used would be Fondant and buttercream :)
other accesories would be made of sugar and marshmallow and edible rice paper.
If you want to decorate a cake like a professional, I will recommend to use Magic Sparkles or Magic Twinkles. These edible glitters enhance your cakes, cupcakes and other dry food items as they are fully edible food decorations with a fantastical jewel-like effect.
You can use Red Velvet cake.
They make a cake pan for making sports ball cakes. Use that and then decorate it to look like a beach ball instead of a baseball or basket ball. http://www.shopbakersnook.com/m5_view_item.html?m5:item=1090
Icing or frosting can be used to decorate a birthday cake.
They usually use fondant
so the cake doesn't fall apart
They are used to decorate cakes.
Suagr makes a cake sweet tasting.
To enhance the flavour of the cake. eg you could add cinnamon to an apple cake / muffin.
Depending on the cake u want to make there are different cake pans or u can also use round cake pas an cut cakes to make designs
To make candy, cakes, pies, hot chocolate, cookies. To decorate cakes, cookies. Pretty much what anyone uses chocolate for.
To use cake strips for baking cakes evenly, soak the strips in water, wrap them around the cake pan before baking, and then bake the cake as usual. The strips help insulate the edges of the pan, allowing the cake to bake more evenly and preventing the edges from overcooking.