To get a smooth finish on the fondant icing, roll together any offcuts of icing and dust lightly with icing sugar. Use this as a pad to help buff out any imperfections in the icing, rubbing gently over the cake to help smooth it out.
If the glaze seems too thick to pour over the cake, gently warm the mixture over a very low heat, stirring regularly, to loosen.
If any air bubbles appear in the finished glaze on the cake, use a cocktail stick to gently pop them.
Excess glaze that drips off the sides of the cake onto the tray can be poured into a bowl and stored in the fridge for up to 1 week for icing other cakes.