Lovely shot, it’s a pity it loses so much detail in her hair and earrings due to blown out highlights. That soft box reflection could have looked nicer if you came a bit closer. IMHO the model did a great job and so did you.
Great work, I truely love your BW shots although it seems your model has light blue eyes and in bw they look very dark, maybe some extra postprocessing might sort it unless you like it this way (minor thing I guess).
I believe some people don’t feel comfortable about piercing and tattoos but I really love a little bit of gothic and fetish touch to portraits. Last series is very good, skin tones in left hand pic are fabulous so are colours on lollypop. You might try some extra work on right hand side pic, especially shoulders. That’s it for now. I’m a beginner with studio lighting myself and would love to find out more about your lighting set ups if you want to share it.