The window sills for all of the windows have to be finished using the same technique shown below.
If you want the window sills to have a different color on the interior than the exterior, you have to finish half of each individual part of the sill differently.
These sills are made of laminated layers of different sizes. This gives them the layered look of real Victorian trim. I recommend you sort out all of the parts first and make sure that you are able to assemble the window sills properly before you begin finishing them.
For my dollhouse, I wanted the exterior sills to have a dark brown top and bottom with a lighter brown middle. To achieve this, I had to paint half of the sill parts, that face the exterior, in the colors I want. I painted half of the large and small sills dark brown and the medium sills light brown.
I left the half of the sill which face the interior alone for now, because I want them to be completely white so I can wait and paint them after laminating them together.
Once laminated together they create the effect shown below. White inside and three colors outside.
Installing The Window Sills
You do not have to glue the sills unless they are so loose that they fall. This will of course, happen to the top one and not the bottom.
The sills go in with a little struggle so be patient. Remember, the siding is in the way and you have to be careful with your wallpaper. I recommend you sand the wall notches on each sill before installation so they go in easier. Place one sill on the top and one on the bottom of the window openings. Make sure that the large sill is always on top, to create the cascading downwards effect.
Installing The Window Casings
Once the sills are in, you can install the casings into the window openings. The best way to do this is to install the interior trim of the window first. Installing the interior trim first, helps in two ways. You can have access through the unobstructed opening to clamp the trim with binder clips. This is great because once the casing is in, there is no way to clamp the interior trim onto it, except with masking tape and you want to avoid having to use tape on your wallpaper. Having the interior trim in place, also helps you insert the casing without it falling inwards through the opening.
First center the finished interior trim on the window opening and clamp with binder clips, if necessary. Once dry, remove the clamps, touch up with paint and insert the casing into the window opening. Press it gently until it touches the interior trim.
Now you can finish and install the exterior trim, whenever your ready.
Since the exterior trim is made of two different size parts, you can finish and laminate them together so they are ready to be installed when you are.
The Kitchen Bay Windows
These are finished and installed like in the rest of the dollhouse but with one difference, the window shelf.
If you would like to install the window shelf, sandwich the wide part where it will rest on between the large and small sills of the bottom window sill. Basically this wide part is the middle piece of your bottom window sill. Finish the half that faces the exterior in your dollhouse color scheme and the half that faces the interior to match your interior trim.
After the sill is finished, rest the kitchen shelf on it. You can leave it removeable or glue it down. I glued mines down so I can finish the surrounding area better.
Keep In Mind
It is much easier to install the casings and trim if the sills have not been glued on. It allows you to move them up and down to obtain a perfectly straight window. The casings and trim will not allow the sills to move once installed.
You might have to cut a little off the "legs" of your trim so it fits between the sills. Do this little by little so you don't cut off too much.
Do not nitpick, especially on the bay windows. Because the bay sills go in a little differently than the sills of the other windows, you might have a hard time getting your casings in place. Sand them down until they fit. You might also have an issue with exterior trim. Some of the legs might not reach all the way down to the sill or there might be a small gap between the trim and top sill. Do not try to fix this. You will make it worse instead of better. The last thing you want is caked spackle in these small areas, calling attention to the problem rather than hiding it. Let it be. Know one will notice unless you point it out. As long as your bay is straight, everyone will be focused on the beauty of the dollhouse and not on these minor inconsistencies.
On the interior of your windows, stay away from the spackle unless the gap is enormous. Again, you don't want spackle caked into small areas making them more visible and worse.
