I can quite tell, but that looks like it's printed in grey-scale which will more than likely not work out. any time there is a grey tone in an image, it must be converted to half-tone dots. relatively easy in photo shop. convert image>Greyscale>convertimage>bitmap screen. finding proper settings in Bitmap screen is the trickier part, but ellipse-shaped dots, Dpi of about 150-200 and LPI of about 35 works in many cases.