I didn't make Kiara with Blackwall in mind, since I went into the game pretty much completely unspoiled, but making my next characters I definitely am thinking about what they look like with the love interest of choice. I also like to match up their backstory/backgrounds with how they look. I usually have my human mages look a little more cleaned up and polished (if they come from the circle, that is). I figure they have some magic to help them with any hairstyles and bathing. I usually go with lighter eyes for mages, I have this head canon that magic use sometimes shows in the iris. I have a rl friend who is completely into reading people's irises. She says you can tell health, and different aspects of the body by doing iris readings. I don't necessarily believe any of them (I may be a pretty big skeptic, in fact), but I loved the idea for use in stories, especially for magic.
For my Trev mage, I want her to look from a noble family and lived in the circle until recently. But I don't like them to look perfect, either. This might be my girl... but maybe not. I head canon that she was teased for her ears, and that was the first time they saw her magic flare up, when an older brother tweaked them one to many times.
I'm one of those people who spend days perfecting the characters. I *still* have not started my 2nd playthrough. All I've been doing the last couple days is making characters and taking screenies of them. Then staring at said screenies, thinking hmmmmmmm. Let's try again! Number 21, coming up! I do this every game. I loved the DAO toolset, because then I could spend forever saving and tweaking faces, and then bring them into the game. I probably had a hundred different face saves, lol. Without some way to save or tweak faces, I know I'll do this until I frustrate myself no end. Only when the frustration reaches it's pinnacle will I finally just point to one and go, YOU! You're going through the game! Right now!
The CC is like a game unto itself! I may be addicted to making characters. I may have a problem.