I find close-up portraits to be one of the most difficult type of 3D images to pull off convincingly. Not just in Vue but in all rendering programs. Here is a recent attempt where I tried to do a fairly close-up portrait of my character Jazz. I imported the posed OBJ from DAZ Studio and then redid all materials and set up the lighting in Vue 8 Infinite.
Probably not spectacular, but overall I was pretty happy with the result and decided to show here anyway.