I actually did this back sometime in 2006. I'm just slow to upload, even though I'm actually pretty proud of this piece.
I read whatever chapter of the manga it was when Riza's tattoo was revealed, and just had to draw it. I was having a fangirl moment...and the idea popped in my head and I went with it. I'm such a Royai nut sometimes.
Inked in pen, then colored in Photoshop. At that point, it was definately my best digital piece and an improvement on what I had been doing.