I have a job to etch a picture of two boys into wood. I got the job off of the customer looking at what i did on marble, Im not at all sure of what i need to do to the pic to get it to come out like it does on marble. I have made a few modifications and gave a test run on sample wood and it looked horrible, i either get the skin to show and everything else to be so dark its no longer a surface etching, or the shirts show up fine but its just a set of floating eyes with a mouth for the head. Im attaching the pic, if anyone can help i would love to hear any advice