A lot depends on the gaming style of your group as well: what kind of game(s) do you prefer and play and in what way do you play them? Without knowing this, the best broad advice seems, indeed, to look for people working in creative fields. (Mind you, a lot of fields can be considered creative, imo. From programming through cooking to graphics design, and everything inbetween...)
If you prefer a less rules intensive, story-oriented approach, go for creatives in a tighter sense: graphic and similar designers, writers, critics, journalists, artisan "crafters", musicians... I mean, people interested--not neccessarily working--in these fields.
If you're more into strategic, rules-heavy "arcade" gaming, programmers, engineers, various developers would seem a better choice, imo.
All in all, if I were you, I'd go for those already interested and involved in rp gaming: I'm sure there are forums, social sites concerning this hobby that are frequented by people living close to you - mention the opportunity at such sites. Also, look for "peer recommendation", see which friends of your friends might be interested.
I think personality is more important in the long run than any single "skill". The latter is (probably a defining) part of the former, but is not alone in itself. It's way better to play with a bit less imaginative person (who's interested in gaming, though) than with a wild creative whom nobody in your group likes. (But that's plain obvious, I think. :))