Stick the bottom layer of your sponge cake to the cake board with a blob of butter cream.
Layer the two sponges together with a layer of buttercream then a layer of jam.
Cover the whole cake with the remaining buttercream and place to one side.
Pinch an amount of black fondant roughly the size of two golf balls and place to one side.
Knead the remaining black fondant well before rolling out into a large circle, big enough to cover the whole cake.
Gently place the black fondant over the cake and shape the icing to cover the sides without any gaps or creases.
Next, between the palms of your hands, roll half of the grey fondant into a short, fat sausage shape.
Place the grey fondant on to your work surface and roll out a long strip, long enough to go from one side of the cake to another.
Using your sharp knife, cut the grey fondant into the shape of a wiggly road.
Brush the top of the cake with a little edible glue and affix the road to the top and side of the cake.
Next, take just over 2/3rds of the white fondant and roll this into a long, thing sausage, that is almost long enough to surround the outside edge of the cake.
Roll this flat and trim to make a ribbon that will fit the bottom of the cake.
Brush the bottom of the cake with a little edible glue all the way round, and finish the bottom edge of the cake with the white fondant ribbon.
Roll out 2/3rds of the remaining black fondant and cut out tiny black squares, half the height of the white ribbon and stick on to the white ribbon, creating a chequered flag effect.
Pinch a little of the white fondant and roll out before cutting thin rectangles to stick to the grey fondant forming the road markings.
Next, take the red icing.
Pinch an amount the size of two grapes and place to one side.
Form the remaining red fondant into a triangle.
Pinch the triangle roughly half way up the sides and create a pointier, more narrow front, just like an F1 car.
Using the tip of your finger, poke a whole toward the back of the car.
Roll a pea sized amount of black and glue this into the hole - this is your drivers helmet.
Take a tiny pinch of white fondant, roll out and cut a small rectangle, small enough to be glued to the pea sized black fondant. Stick this to the pea sized black fondant creating a visor for the helmet.
Cut a tiny circular disk and glue to the narrow front of the car.
Using the edible marker, add a number to the disk. I used 44 for Lewis Hamilton and 30 for Chris' age.
Next take half of the remaining black fondant and cut out 4 small circular for wheels. I used a star icing nozzle to create the effect of spokes on the wheels.
Stick these to the side of the car using a little edible glue.
Finally, take the remaining red fondant and roll out two rectangles.
Using edible glue stick on to the front of the car, just under the nose, and one on the back behind the helmet.
Using 2/3rds of the blue fondant, repeat this process to make the second car.
Stick the two cars on to the road on top of the cake using a little edible glue.
Take the remianing grey fondant and shape into a podium.
Using the edible markers write 1, 2 and 3 on the different levels.
Stick to the back of the cake using a little edible glue.
Next, roll out the remaining white fondant and cut into an oval shape.
Repeat with the blue fondant cutting the oval slightly smaller.
Stick the white oval to the front of the cake, then the blue oval on top using a little edible glue.
Take your writing icing and pipe your message, this might be 'Happy Birthday' or the name of the birthday boy or girl!
Last but not least, make two little flags out of the paper and toothpicks, one with the formula 1 badge and the other in the style of a chequered flag.