I wanted to imagine how the two might look if they were regular people in the real world. It didn't come out quite as I had envisioned, but I quite like it. Although Vincent's hand came out funny. >_< Black ink.
Special techniques? I'm sure I do, I just can't remember at the moment. >_<;
I guess I *sometimes* outline my drawings with blck at the edges once I'm done to give them a more solid feel, and sometimes I add small lines to highlight the hair. In colored pictures I usually give the people light pink tints on the cheeks, fingertips and ears. And ... hands? I really don't know, I guess you just practice, that's how I got better. I have no idea. >_<;