A cone shape can be simply made using a thin plastic cutting board, or any stiff plastic.Glue or stitch to hold seam in place. A simple way to colour your paste is to mix the liquid with some dry icing sugar first, then add to the mix. Warm to keep pliable, but dont melt, as this will result in a coarse grainy texture.
This tree was so simple to make and such fun....and it looks great. Much nicer then the bought ones and edible too.Next time i will make a white one and try to attach silver cachous (balls) at the tips with egg white and maybe sprinkle it with castor sugar (to look like snow) - 05 Jan 2010