I think I might have this aspect too. It means that Neptune clouds your vision of what career choice to go into. Neptune heavily infuences your career space and how you appear to others?I've read that it gives a possibility of becoming a movie star, because Neptune rules film and illusions. It also indicates that the person appears to be glamorous.
Here is astro.com 's intepretation:
Neptune Conjunct Midheaven
This aspect presents many opportunities and many challenges. You are very sensitive to whatever happens around you, and you seem to soak up impressions like a sponge. But you do not always know what these impressions mean or what to do with them.
One of your parents, at least, should be able to lovingly but firmly guide you through life and point out the difference between realities and illusions.
Your parents should accept the fact that your so-called fantasies are actually based on a reality that is not easy to understand. They should help you learn to interpret this reality rather than saying that you are only dreaming or making it all up.
It won't be easy to find the right course to follow in life, but this position provides a few clues. First of all, you should feel that you are working for a cause higher than yourself, whether it is serving or taking care of others in some way or working for an idea or faith.
Hope this helps!