Would you mind if I suggested Seren with my character, Kyran?
http://www.furaffinity.net/view/18201350/

Or if not, could always have her in maybe in a corset and stockings.

Seren is quite a lovely OC of yours! <3
If I may throw a few suggestions your way (ranging from G to X-rated):
~ Seren getting mounted by a feral dog (any one will do, preferably Gshep/Doberman/Timberwolf/equally big dog breed).
~ Seren dressed as a flirty, sexy nurse or a heavy-duty Gothic dominatrix.
~ Seren in a yoga pose, nude, with her legs wrapped behind her head, smiling and winking at her attentive audience (aka ALL OF US, THE +WATCHERS <3).
~ Seren & Maxwell hanging out, playing games, smoking cigs/dope/cloves/etc., drinking coffee... whatever she considers leisurely down-time activities.