To finish the bay window assembly, score the lines of the green printable roof and glue it so the lower edge overhangs the window and the upper edges match the upper edge of the bay. Test fit it before you glue it in place. If your bay window was assembled square, the roof should fit flat against a wall surface when the window is assembled. Glue the green roof in place once you are sure there will be no gaps between your printable bay window and your background wall.
For a more permanent bay window made from heavier card or lightweight wood, use the green window printable as a text fit for a roof for your bay. If the roof appears to be the right size (depends on the thickness of your material) use the three roof sections to cut three pieces of roofing support for your bay window. You can use the green roof template to cut a section of thin copper sheet or decorative paper to overlay your roof, or you can cut shingles from strips of paper and shingle your bay.
To use the window for a miniature windowbox, determine how you will arrange your display inside the window, and create a paper backing to sit behind your window display, at least 1/3 of the way up your window above the shelf. This backing can be glued to the wallpaper or photo you use for the shop scene behind the window. If you are making a window display from heavier card or lightweight wood, set up your display in your bay, then lay the backing card over the back of the window. Run a bead of glue along the edges of the window bay and glue it to the backdrop you use to suggest a shop behind your window. Create a wall treatment around your window after you have it glued to the backing.
You can build these window bays and add them to a simple bookend (see projects below) to make a miniature display for a shelf or bookcase, or you can build a shallow roombox and create window box vignettes.
