You can use any shape cutter for these marzipan treats. Layer them up with baking parchment.
Make the marzipan: mix the almonds and sugars until well combined. Add the egg and almond essence and mix to a stiff paste, using your hands to press the mixture together. Knead the marzipan briefly on a surface dusted with icing sugar, then roll out to a thickness of about 1cm.
Line a baking sheet with baking parchment, then carefully set marzipan on top. Leave to set for 1 hr.
Beat royal icing and lemon juice together, then spread evenly over the marzipan. Leave to dry overnight.
Cut the iced marzipan with small cutters and press a piece of crystallised fruit into the centre of each. Pack into boxes interleaved with baking parchment.