Score the many small fold lines on the main section of the tower. Cut out and crease the folds carefully. Test the fit of the tabs and small rooftops which tuck under each section of roof before gluing the piece together.
Glue the tabs one at a time, starting at the top. Use a tweezers to press each tab inside the piece into position. Before the glue dries, lay the piece on its side to make sure the tower is straight and each folded front wall meets the side walls squarely. Adjust the positioning of the walls if necessary.