Now that the glue is dry, you need to prime all the walls before wallpapering. If you plan to stain the floors, do it now. Staining after wallpapering can lead to drips and splatters that ruin the wallpaper. If you're using floor covering, wait until after the wallpaper is up. You should also paint or cover the ceilings at this stage.
I chose to stain all the floors except for the living room. I create my stain using a mixture of acrylic paint and acrylic gloss varnish, which allows me to make any color I want. This stain is odor-free, applies smoothly, and works well over glue. In the living room, I plan to use fabric instead of stain to mimic carpeting. I have a nice piece of fabric that I haven't used in another dollhouse, and I think it will complement the wallpaper colors beautifully.
Be careful not to accidentally prime your floors unless you're covering them later. Your priming doesn’t need to be perfect; one coat is sufficient, and any blotches will be hidden by the wallpaper. I typically paint my ceilings the same color as the primer but apply two coats for better coverage. Once the primer is dry, you can start wallpapering. When applying wallpaper, always overlap corner joints for added strength.
To apply fabric to a floor or wall, first make a paper template of the area you want to cover. This room was simple since it's square and nearly the size of an 8x11 sheet of paper. I used this template to cut out my fabric piece. I applied tacky glue sparingly across the floor and used a foam brush to spread it into the corners and edges before laying down my fabric piece. I don't have to worry about fraying since I'll use baseboards around the wall joints. The only area of concern is the back floor edge, where I applied a bit of tacky glue to prevent fraying. You can also use anti-fray fabric glue from a fabric store, but tacky glue works well and dries clear. I have enough leftover fabric to make a staircase runner.
