I'm new to making and decorating cakes but after making a cake for my son and daughter's birthday other family members are putting in their requests. Here is a cake I made for my nephews birthday. The bike is made of white chocolate. I used black MMF for the squares. The dirt is crushed grahm crakers and oreos. I molded the jumps out of cake trimmings and then iced w/brown buttercream topped with the "dirt". The icing is buttercream.