Abstract: An accessory tool for the application of adhesive films to substrates. The tool is elongate and thin, and made of a lightweight semi-rigid to rigid material. The tool functions as a linear support for the free edge of the film piece during the application process. The tool improves the ability of a worker to hold a film piece taut at a level above the substrate. Use of the tool prevents premature adherence and reduces the formation of bubbles, wrinkles, and other defects commonly encountered during film application. The tool relies on the adhesive nature of the film piece itself in order to make a non-permanent connection between the two. The tool is useful for printing businesses that apply adhesive film pieces, such as graphics, to substrates daily. The invention also relates to an improved manual method for applying adhesive films to substrates.