Well if it's new on your mind, then don't. They tend to last a long, long while. However it would appear that you have given it thought. Get what you really want , if a unicorn is a part of your clan crest then it's what it means to you, don't give a toss what others might think., those idiots are just not that important. Those that matter will understand and respect it. Take your time, draw out your ideas or get an artistic friend to do it. It appears that the US Navy has relaxed tattoo policy slightly. And never, ever get a girls name tattooed!!!