Well,.... first of all there really is no way to achieve the line work since they were originally ecthings and the lines conform to the shape of the volumes they depict (meaning, not straight across like some etching styles), However, using the halftone filter (under the Sketch filters) OR using the Conte' Crayon filter (also under the sketch filters or maybe a combination of both, you may be able to create an etched look that serves your purpose. Take the image of your face and desaturate it (turn it into a grayscale image) and then run those filters to try and get it close to an ecthed look. Merge that (or a duplicate layer) with the bill image (or a duplicate image of that) and destaurate the whole thing and create an adjustment layer or layer effect to bring the color back into it. Doing it this way will ensure color uniformity since you'll be adding color back into the whole thing at once rather than trying to adjust your face to match the bill (much harder to do). I've not tried this myself but this is how I'd start anyway. The hardest part is going to be achieving the etched line look in your face.