That is a very sweet idea, Sara. I just got a half sleeve tattoo that extends from my shoulder to my elbow 7 weeks ago; it's of the 2009 Hard Rock Cafe Rockabilly Barbie Doll. The original Barbie Doll holds in her right hand an upright bass. For my tattoo, I replaced the bass with a pool cue and added a banner that reads "Eight Ball Barbie Doll". It's beautiful! I plan to get an epic half sleeve tattoo on my other shoulder this summer of the female Buddha known as Vajrayogini. She is gorgeous, terrifying, metal and liberating all at once! She's often referred to as The Trauma Goddess; I'm getting her to represent the long difficult path I followed to become the lovely woman I always knew myself to be.
After Vajrayogini, maybe for my 50th birthday next February, I'm designing a tattoo for the inside of my left forearm, just below the elbow. This tattoo will be about 2 to 3 inches across and will face my body when my arm hangs naturally. The design will be based on the symbol for "bio-hazard", consisting of 3 interconnected semi-circles imposed over a central circle. In the center of the inner circle will be the symbol for trans pride, a smaller circle with an arrow pointed up to the right, a cross pointed down, and a combination arrow/cross pointed up to the left. The imagery suits my rebellious, edgy nature, and mostly only those in "the know" will recognize the meaning of the symbology.
I hope you'll post pictures of your new tattoo when it's done.

Miharu