I am a graphic artist and I have designed several makers marks and tens of thousands of tattoos. Your crest, converted to a solid color and reduced to an inch in height, which is probably way too tall unless you are just making machetes, swords, and Bowies, is already illegible. The design would have to be drastically simplified.
Even just going with your last name and adding the hand, a lot of the interior lines in the hand would not show. The lion is worse because of the detail.
Feel free to PM me if you have questions.