I tend to move in my LD's in a "Crouching Tiger Hidden Dragon" sort of way. Most have been indoors so far so I usually start flying by walking up walls and launching off from the ceiling. I don't think about it, it feels as natural as walking to me does in the physical world. I've flown without doing this and levitated, but the main thing that makes it work for me is treating it like natural movement, not something you're trying to do. The one time I consciously tried to fly it didn't work.