rikkib, Don't get frustrated. I have been cooking all my life as a home cook and as a professional. I can't tell you how many disasters and disappointments I have created through the 39 odd some plus years.
Besides cooking I am a Carpenter. I would suggest that if any one wants to make a decorative Ginger Bread house, not for eating purposes, make a pattern from card board first. The walls, the roof, the chimney. Then using the frosting for a glue and the card board for templates, cut the ginger bread to size and using the frosting for glue, paste the ginger bread cut outs onto the card board. After cutting the ginger bread to size, I usually hot glue the card board frame together to make the shell of the house.
After the ginger bread has all been pasted onto the frame, use the frosting on the seams to look like trim and snow and ice. Use hard candy, candy canes and licorice and little ginger bread people for decorations. The decorations can be for the children that want the Hansel and Gretel experience and snack on the house. The nice thing about a gingerbread house like this, wrap it up in plastic wrap after the Christmas season and store it until the following year. When your ready to use it, just redecorate.For those that don't want to use gingerbread, Graham Crackers work excellent..