Valentines Cupcakes?

Ok i'll just get straight to the point, these are the cupcakes i made earlier today. Vanilla sponge coloured pink althought its not very obvious in the picture:

I made chocolate buttercream and piped it from the centre outwards to make it look like a rose, then sprinkled little heart sprinkles. I think they turned out pretty cute, here's the recipe for the buttercream:

100g butter/marg

150g icing sugar

50g cocoa powder

(This probably decorates about 10 cupcakes, also if you want the chocolate flavour stronger take some of the icing out and add more cocoa powder.)