Cut the soft metal sheet to cover the outside of the roof section and the upper side of the base. Secure them by running strips of self-adhesive foil tape around the edge, allowing it to warp over the sides of each section. Use the Dremel Glue Gun and clear glue to glue the end of the perch into the hole drilled through the front of the birdhouse. Again with your Dremel Glue Gun and clear glue, glue the pieces together to form the house, sandwiching the side panels between the front and back panels. Glue the house centrally onto the base, then glue on the roof sections, allowing the larger section to overlap the smaller section at the apex.