Sonic Green Hill Zone Cake

~ 3 tiers : 5'', 7'', 9'' round pan, each tier composed by : 2 layers of Orange flavoured cake and 1 layer chocolate cake, spiral sculpted ~ Vanilla butter cream frosting ~ Homemade Marshmallow fondant, Americolor's Lemon yellow, orange, super red, leaf green, electric green, chocolate brown, Wilton's royal blue, black ~ Sonic Topper made of fondant and tylose standing with iron armature ~ Rings made of fondant and tylose standing with spaghetti