Now, you should prime the interior of the dollhouse with a flat, light-colored paint. I recommend painting the ceilings as well. It's important to paint the windows before adding the wallpaper, as it will be difficult to do so afterward.
Painting these detailed windows can be challenging, as paint tends to clump in the corners of the small mullion decorations. The best approach is to paint one side first and then dab your brush along the corners where the clumps form. After that, repeat the process on the other side. Sand both sides and use a foam brush to apply more paint. Finally, use your finger to rub and smooth the paint on each side of the windows.
