Keep your fingers clean and free of icing at all times otherwise your house will have unsightly smears all over it.
Start by setting one gingerbread house gable side in the bead of royal icing. Place a long gingerbread house side in the other bead of royal icing. While holding the pieces with one hand, run a bead of royal icing up the seam, making sure all gaps are covered. Hold for a few seconds and release. If you have trouble with slippage, you can prop the walls up with whatever is handy.
If the project you're working on isn't an intricate pattern, dependent on exactly matching pieces, don't worry if there are gaps between pieces. Just fill them with royal icing. The decorations will cover a multitude of sins.


