Thanks, BlackSabb, blackmarch and Keith99, for your concerns, I'll try to address them as clearly as I can:
@Keith99, I'm asking my Old Testament Professor today about the context and original Hebrew translation of Leviticus 19. I've read and re-read this chapter during my period of search, and it makes me wonder how one verse could be interpreted in so many ways: what was God's intent for his immediate audience versus us now? is one topic we are discussing right now in class. If I may, please take a look at this New Testament quote from Paul -
Galatians 6:17 - PassageLookup - New International Version - BibleGateway.com
Also, thank you for your info regarding left and right tattoos...a little disturbing, but I'll keep that in my prayers. And I'm in the US at this moment in time, but I'm trying to get in contact with some of our Aboriginal Church friends and see what they have to say
@BlackSabb, I'm preparing to be a conceptual artist; I communicate ideas to our visually-driven world by images. In a situation, such as an art show, where people are gathered all together and have come to respond to the images they see, my tattoo (being conceptual art itself and a medium most people of my generation are familiar with and comfortable talking about) will not only be an intro to evangelism, but also a personal visual reminder (think purity ring or cross necklace) of my commitment to Christ and His plan for me.
And, to be honest, the idea of hating (and I mean TRULY hating) my permanently marked skin 50 years down the road is something I'll deal with once I'm 50 years down the road

For me, for my next 30 years, I can see myself wearing this mark of my faith. Maybe not fifty years, but definitely thirty.
And if I may defend myself here, I don't think I've ever been LESS immature about something in my life. This is a decision that none of my family or I will take lightly. This is being prayed and read and studied and prayed some MORE over. I'm feeling very convicted about this.
@Blackmarch, thank you also for your warning. However, you've got it backwards, in my opinion (no offense! please don't shout at me, Reb Tevye!) For me, this tattoo isn't about putting a permanent mark on my body just because it looks cool and I like it. That comes into it, yes, but it also needs deeper meaning. Yes, I could come up with whatever kind of interpretation I want for almost any tattoo I could get, but unless God is the reason behind my decision, and unless I'm reminded of that every time I see it, then there's no point, and I should just forget about it.
Thanks to you all for your opinions; I feel like I'm coming closer and closer to being ready to do this. Still a lot of prayer needed, but we're getting there!