If you're using continuous lighting, it is almost always a good idea to be using a tripod. Shutter speeds under most normal, consumer-level continuous lights are going to be on the slow side, like 1/4 to 1/30 second at apertures like f/6.3 at ISO 200. Because of those slow speeds, your subject can NOT be moving, unless you wish to experiment with deliberate motion blur. The tripod keeps the camera steady, but it also allows you to frame the shot,and then to make minor changes in the pose, or the positioning of the camera. The tripod slows you down, and that means you'll have the opportunity to subtly vary the poses, or to make important framing adjustments, like lowering the camera, or zooming back a bit to avoid lopping off of the feet or head or hands, etc.
Another thing is how close you actually ARE to the subject. The distance from the person to the camera will greatly affect apparent perspective; at close shooting distances, limbs that are extended toward the camera will be rendered much larger, physically, on-sensor, than if you were to back the camera farther away. Creating very loooooong-looking legs can be done by using a 20mm-28mm lens and having the subject seated with her legs extending toward the camera, from a fairly close camera-to-subject distance. The head and torso will be rendered much smaller, and the difference in PHYSICAL, on-sensor, or on-paper size of the extended limbs and the rest of the body creates a different "look" than if you back the camera up to 30 feet, and use an 85mm lens. So, how close you actually ARE to the subject determines the way the lens will render the body. But there is another critical factor that camera to subject distance influences, and that is the comfort of the subject,and I think for some people, the comfort of the photographer.
If the camera is far back, the subject has more personal space. If the camera is very close, the photographer and camera can easily be in the "personal space" zone of the subject. For many people, having a camera breathing down in them is uncomfortable, so, you might want to keep that in mind. If the camera and photographer are fairly far away, the subject will often be more at-ease, for any number of reasons.