Take your other bowl of buttercream and add the Green Colour Gel, mix until the colour is evenly distributed.
Slice the back off 7 ice cream cone so that they sit flat against the side of the cake.
Place the cones around the side of the cake and the other 3 cones on top of the cake.
Fill a piping bag fitted with a small star nozzle with the green buttercream.
Pipe onto the trees to cover in buttercream and create the tree effect.
Finally finish by dusting the cake with icing sugar so create a snow scene!