Abstract: A decorating imprinting device, pattern sheet and method are disclosed. The imprinting device is a multi-piece stamp made of polymer sponges, containing a relieved decorative design to be imprinted with paint material on a desired, relatively smooth surface, such as a wall, a piece of furniture. The pattern sheet is made of lightweight, flexible material, contains regularly made perforations of variable number, shapes and sizes to adapt to imprinting devices of different shapes and sizes. The pattern sheet is intended to be placed on the surface where the decorative design will be imprinted, allowing the operator to repetitively imprint the design on the selected surface through the perforations on the sheet, consistent and easily following the predetermined pattern, creating a wallpaper effect.