Thing is, Beyond, it wouldn't matter what you'd put up, deepinthewoods would have sneered at it. As you say, your phoenix means a lot to you and that's what matters.
Incidentally none of my tattoos have any symbolic or personal meaning to me at all! They reflect my interests and aesthetic tastes, but that's it. I do want to correct something deepinthewoods says - lots of tattoos are custom drawn, one off pieces, and all mine are. I haven't seen any like them anywhere, which is one reason I won't put them up online much because they might get copied (this happens a lot). Others are from 'flash' - pre-drawn designs you can choose beforehand from a selection. Both types of tattoo have their place.
There are themes in tattooing - you quite often see them coming up again and again, and the old school favourites - skulls, daggers, sparrows etc, are as popular now as they ever were. And of course certain styles of tattooing, like Japanese, have particular set motifs that people rework in different ways - koi, tigers, flowers like peonies/chrysanthemums/cherry blossom, warriors, dragons, etc.
I love tattoos, love pictures of tattoos, love hearing people talking about their tattoos and what they mean/don't mean to them. I guess it is a hobby for me but I don't see anything wrong with that! I'm not hurting anyone. My children love my work and I think having a mum that looks different has helped them be more accepting of difference in others, in whatever form it takes.