Okay,
Here's my opinion as a lady first;
You have to put your model at ease, it is the most important thing. Joke with him\her, you can do some test shots when the model is already naked, so he's getting used to his nakedness, talk about anything while you set your lights. I did some lingerie photo not even naked with a friend of mine, who's also a photographer and even if I can be quite the exhibitionist sometimes, I was super self conscious, I took me around 45 min to get a bit more confortable.
Now for artistic nude, you want nice lighting, you want texture, use water, use ice, use oil. I was quite fortunate the first time I did artistic nude as my model was a dancer (not exotic, real dancer) so we used her passion to create something togerther. It might be your eyes, but don't forget, you are a team, include him or her, Always ask if you want to replace something as it might be tricky. Don't look at the model like he's naked, it's nothing more than a body, it shouldn't be sexualised, you should rather emphasize on the beauty. I don't know if it makes sense.