Projections on the projector screen should be detailed and clear to see. Reduced sharpness in the details or distortion of the image projection could be due to wrinkles or waves on the screen’s surface that distort images. Make sure to check for wrinkles on the screen. You should also check if the screen has dirt or dust accumulation that could affect the image quality. Otherwise, the problem could be with the matte paint on the screen, and you will need expert help as it is not advisable to fix it on your own.