Mix the lemon juice and icing sugar, except for one tablespoon, to a smooth glaze. Pour into a freezer bag and cut off a small corner. First sprinkle 2 coconut marshmallows with a little icing and stick them together. Put a strip of icing on the chocolate side of 4 biscuits and place the double marshmallows on top. Decorate the biscuits all around with icing and pearls. Halve 3 biscuits crosswise.
Coat the cookie sides with icing and stick them on top of 3 of the marshmallow cookies as a roof. Coat the cookie sides of 2 whole biscuits with icing and stick them as a roof on the 4th marshmallow cookie. Let everything dry for about 30 minutes. Decorate house roofs with remaining icing and pearls. Dust with remaining icing sugar
30 minutes waiting time