I realise you’re young and inexperienced, but you’ll have to do better than that a to be taken seriously.
As a university student you’re supposed to be able to express yourself in coherent sentences:
“an industry … a self-regulated community” - you string these two labels together as if there were necessarily a link between them. Not only is that a highly questionable proposition, but the mere use of those labels indicates a lack of critical thinking.
“the relationship between the client and the practice” - what on earth does that mean? What do you imagine “the practice” to be? The whore’s service? The process of meeting a whore? How can there be a relationship between a person and a process?
“the sex industry” - what do you include in this? Porno film-making? Ann Summers? Streetwalkers? Massage parlours? The Sun?
"from the people's point of view” - do you mean “the peoples’ point of view”, or are you after the viewpoint of “the man in the street”, or are you coming at this from the viewpoint of dialectical materialism?
“because I want to question the stigma…” - two points here: first, the stigma, inasmuch as it exists, is in the minds of people who are not involved in the “sex industry”, so maybe you should go photograph them; second, why is “focusing on the relationship” your chosen method of questioning (by which I assume you mean “showing to be unjustified”) a social attitude?
“it surprises me considering how much influence sex has on our society…” - it doesn’t surprise me that it surprises you, given that you are young and obviously naive, except that it surprises me that you think a different, albeit related thing (influence of sex) would alter “our society” (what is that, by the way, this ubiquitous, homogeneous, nebulous concept that is universally accepted and understood by everyone in exactly the same way?) in its attitude to a diverse and ill-understood set of commercial enterprises trading in and on the desire for sexual gratification in any one of many complex forms?
However, it is good to know you are “fairly open minded to the idea of punting”, so you won’t be too judgemental (or do you mean, you fancy a punt yourself but you can’t quite screw up the courage, or you’re a bit too cash-strapped?) and your questioning of this stigma you’ve identified is presumably also going to be at least “fairly” open-minded.
So, dear male student, you want to take photos of whores and punters in their natural habitat (or have I misunderstood something?) so you can do a project for your university degree course, which photos will, in the nature of such projects, be published and available to anyone with an interest in looking for them, and you'd like us to help you out by volunteering as subjects.
Have I got that right?