What kind of faux leather and what kind of details are you trying to do?
If it's something like metal rivets or something...those exist. If it's a surface treatment, there may be other easy options.
But if it's something that, in real leather, would be made by either stamping into the leather or wet-forming the leather over an embossing mold, that's entirely different.
Founder and President, Madison Area Costuming Society, a chapter of the International Costumer's Guild
Strange Land Costuming - www.strangelandcostumes.com