Party Ring cake

I made this one possibly last August for my friend Katie's birthday:
Party Ring lemon cake
You will need:
6oz/175g caster sugar
6oz/175g margarine
6oz/175g self raising flour
3 eggs
1 large lemon
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For the icing:
Icing sugar
Red and yellow food colouring
Skewer or something pointy!

Make the cake mixture as for Victoria sponge*, add the juice and (grated) rind of half the lemon to the mixture. Bake for around 30 minutes in a round, deep tin.
Leave to cool.
Make pink icing using the icing sugar, red colouring food and the juice of the other half of the lemon, add warm water if icing is too thick. Make enough to cover the cake. Make a small amount of yellow icing too.
Cut a circle out of the middle of the cake to make a ring.
Smooth over the pink icing and using a tea spoon drop lines of the yellow icing across. With the skewer drag through the opposite direction to what your yellow lines go. Do this evenly spaced around four times, this creates the feather icing look on party rings!

*Recipe in Sugar Paper #1