First preheat the oven at 160 c for fan oven or gas mark 3 :)

Then mix 170g of the butter, 170g of caster sugar, 170g of self raising flour and the 3 eggs.
Mix until soft and fluffy :)

Pour into the cake cases and bake for 15-20 minutes :)

For the butter icing first soften 100g of butter, then add the 1 1/2 cup of icing sugar and the vanilla essence (if you want) and mix until soft :)

Now you need to split the butter icing for the different colours.
Pour a quarter of the icing into one bowl, then put a few drops of the blue colouring into it and mix until you get the right colour.
Split the last of the icing in half and in the one half put red colouring and mix until you get the right colour. For the last half of the icing you don't need to add anything because this will be the white stripes on the flag. :)

Now get 6 cakes and with a spoon or knife spread the blue icing on.
Once your done you can add some of the chocolate stars, I put on 50 stars exactly lol :)

Fill the icing bag with the red icing and on the rest of the cakes put about 3 stripes on leaving enough room for the white stripes :)

Clean the icing bag out and fill it with the white icing, then put in the last stripes on the cakes :)

Arrange your cakes out into the shape of the flag, and your done :D