Put a face on a coin - part 1

First you need to find a coin at Web or make the coin using Photoshop skills

Select the coin and change the background to black

Choose an image that will be the image on the coin. Select what do you want to put on the coin;

With the selection on, use Filter>stylize>emboss. At that work I have used :
angle: 135º
height : 4 pixels
amount: 80%

Drag the selected image that you have used emboss against to the coin, and make the necessaries adjustments using edit>transform path;