hi summyia, it's me lisa from cake emprise! nice to see you here....for modelling chocolate use the following recipe. 125g (4oz) dark, milk, or vanilla chocolate, 2 tablespoons liquid glucose, warmed. melt the chocolate in a heatproof bowl over a pan of hot water (don't let the base of the bowl sit in the water). remove from heat and stir in the glucose until the mixture is just combined. put the paste in a plastic bag and chill for about 1 hour, until firm but pliable. can be kept, tightly wrapped in the bag, in a cool place for serveral weeks, break off pieces as required and knead until pliable. roll out on a surface dusted with cornflour. makes about 180g (6oz). recipe from "the essential cake decorating guide"
i hope this helps! talk to you soon, love lisa