I usually draw (horribly) characters' knives/such over their left or right breast (anatomically speaking, not the baby feeders), depending on their handedness, the handle pointed down. Just for ease of access.
Beautiful work. I'm actually quite jealous. Though most of my characters (in NWN1/2, D&D, or elsewhere like in books) are male, if I could draw even women like this, with variation of course, as I would not copy, I would be pleased. Not to mention that one of my OC's, Sir Tegid Tathal (Half-elf bard), is having a romance in the paper/pencil D&D with another character, another OC (my own, admittedly) by the name of Elena. I've already (crudely) drawn "Teggie" as he is known by my mates, but since curves (especially... female curves) are my bane, Elena remains in my head alone.
But I've ranted long enough. Great work, I truly admire (and envy) your skill! Definitely watching you; love the style, and the fact that you rarely (if ever, haven't seen any yet) draw in full colour adds to the awesomeness factor!