A cake decorated with a playing card looks impressive and is suitable as a birthday cake for a poker or bridge player. It is straightforward for novice cake decorators as there are few colours involved. The lower the value of the playing card, the easier it is to draw. Picture cards are the hardest of all, and should be avoided by beginner cake decorators. A playing card on a plain white cake looks dramatic. For a more complicated version try icing the cake in green to look like a card table and adding cards drawn using white sugar paste.
Draw the outline of the card on paper, and practice the design until you are happy with it.
Cover a chopping board with greaseproof paper, sprinkle it with icing sugar and roll out a little white sugar paste. Cut out a playing card shape, and discard the rest of the sugar paste. Place in a cool dry place to harden. You may omit this step and apply the design directly onto the cake itself.
Use an edible food colouring pen to fill in the outline of the card, and allow it to dry.
Draw in the rest of the card design, working from the top left hand corner downward. If you need to change colours, let the first colour dry completely otherwise you may spoil the crisp outlines of the design.
Leave the card to dry, then peel it away from the greaseproof paper and transfer it to the cake.
If you can't get hold of an edible food colouring pen, try using gel food colouring and a paint brush. Gel colours are preferable to liquids, as they don't bleed into the surface of the icing.