My attitude and mannerisms change when I am asked to do a reading. It's kind of weird and I hadn't thought about it until the last 2 people asked me and I caught what I sounded/felt like.
During the "rules" phase, where I explain what I will and won't do (no readings on physical ills, legal issues, ect ect) I come across stern and my voice is very firm, devoid of emotion. These are not negotiable and I think my voice reflects the seriousness of the situation and the lack of wiggle room. Forbidding, direct, cold. "This is my line, you will not cross it, ever."
During the next phase where I explain a bit about myself and where I am in tarot, and that I am learning, my voice is a middle. It's not inviting yet, it's not soft, but it conveys that unsteadiness of someone who hasn't done much reading for others. It's also about this point that I tell them I do not require a fee and that if they feel compelled to compensate me, they should consider donating to Breast Cancer this month.
When it comes to the reading phase, I've only had the chance to do this once or twice with a coworker. My voice doesn't get warm and comforting like I want it to. It kind of hangs out around an intellectual tone, thoughtful when I'm pondering the spread, but still kind of cold. It's only when the reader interacts with me and asks questions that I think they'd hear a softer tone from me if at all.
Kinda stinks for me. With very close friends I'm gushy warm and use little voices and whatnot to cheer people up. It just doesn't seem to cross into tarot territory though ="