To cut the wallpaper to fit around a window, first measure the height and width of the window opening, including any trim or molding. Add a few extra inches to the measurements to allow for a precise fit. Then, cut the wallpaper to the appropriate size using a sharp utility knife or scissors. Carefully line up the wallpaper with the window opening, making sure to avoid any wrinkles or creases. Use a straight edge or ruler to make precise cuts around the window, taking care to avoid cutting too close to the window frame or trim. Smooth out any air bubbles or wrinkles using a wallpaper smoothing brush or seam roller.

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