I had a request to make Lightning McQueen cakes. So I made a simple square cake and put fondant on the top with buttercream round the edges.
Then, using edible pens, we drew the McQueen onto the fondant using a template from a colouring book.
And...
Once we completed that, we did the outlines with royal icing and filled it in. It looked great and the requester was more than pleased with it! :)