Mike,
Try the file I attached on some scrap and see how it turns out. I think the depth of cut is 0.005". Set the scale at .6 in mach and that will get you close to what is shown in the attached pic. The box is 1.5 x 1.5 ".
It's just a test piece which will give you an idea of what to expect from the picture. It has the flag, some stars, and a few details which will give you an idea of how well your machine will engrave. At that size you don't want much detail but still need to convey the info to the viewer. Thus detail in the right spots, some shading cuts, and minimize the amount of gcode / movements.
Can you post a picture of the reciever side that it will go on?
To post a pic just, click preview, and then when the window opens, click Additional Options and you will see that you can attach a file.
RICH