so firstly start with a ball of white icing or modelling paste which works best
Then using coloured paste (don't use runny food colours from supermarkets they don't work well for modelling) work a small amount of colour and i do mean small as in less than a pea size amount!! into the paste/icing.
And here he is finished ready to go on top of a little boys christening cake xx
Hope this post was helpful and if you have any comments or questions please leave them here and I'll reply
Happy Baking Kelly xx