I'm still a beginner when it comes to interpreting charts, so don't take everything I say literally... I'll just give it a shot, and more experienced members can correct me if they see me make a mistake:
8 of the 10 major planets are below the horizon, which should give you a strong ability to understand the inner world. Additionally, the Sun and Mercury in the 4th house should enhance this trait, I think. Also Scorpio rising should give the ability to "see the unseen"... the inner world of others. Moon in the 10th house gives the ability to understand what people want (I associate this placement with someone who has an intuitive understanding of other peoples needs and is able to capitalize on it... ie. marketing/pr/etc... which is useful no matter what you do, but probably especially useful in fashion design). The ruler of the 10th house of profession (mercury in your case) is in the 4th house; again suggesting something to do with 4th house matters ("home," and therefore also our psychological nature, "where we feel at home," etc.).
All of these strengths listed above have to do with psychology, but can also be applied to fashion design... understanding people, what makes them tick, and how to fulfill their needs is something that can still be employed in fashion design.
You have Sun Square Uranus:
http://www.cafeastrology.com/natal/sunuranusaspects.html
"It can be difficult to hold a 9 to 5 job or to develop steady routines. They work best when they can manage their own schedules. They work in spurts. When they are hit with creative inspiration, they are capable of tremendous effort. However, they can be quite temperamental, and it is very hard for them to pour their hearts and souls into something that they don't "feel" for at the moment. They don't like superficiality or pretense, which is an admirable trait. However, their disdain for pretense can be problematic in a world where people are expected to perform whether they are inspired or not!"
Sun, and MC ruler in the Fourth house also suggests a possible desire to work from home, so you might also have an inclination to work independently, whether you do fashion design or psychology. This is reinforced by your North Node in Taurus, as this suggests that you are better off working by yourself, and slowly and persistently building something of lasting value.
Mars conjunct Venus would probably give a desire to express your creativity, especially so because it is in the 5th house (personal creativity) and in the sign of aries (a very impulsive sign that likes action). My guess is that you probably would like to have a variety of projects to work on, that also don't extend over too long periods of time. The conjunction makes it such that when you express the energy of one planet, you also express the energy of the other planet side-by-side. These two planets are also trine Uranus, which would make your creativity highly unique. Seeing that these two planets are also the only planets in the "social houses" (House 5 through 8), you might not be inclined to work that focuses on one-on-one work with another person, as you might start to feel impatient over time. This is probably further intensified by the fact that the 5th house is the "first social house," and has to do more with expressing oneself, rather than "receiving another person."
Venus is also the ruler of your 6th house, and so figures into determining your "routine work-life." So again, it should emphasize what was mentioned in the last paragraph.
North Node in the 7th house suggests that by engaging in activities that focus on "other," you will unlock the psychological qualities in the direction of your greatest growth. But this need not form the basis of a career, however, as it can be something you work on in your day-to-day life.
What are your options with regards to psychology? Are you considering going the research route? Or the counselling route? Or maybe even getting into Organizational Psychology (business)?
Also, what are your financial goals? I would imagine that metaphysical knowledge and Astrology can be hard to make a good living off of. It's not impossible, but you might want to consider that Fashion Design might be far more lucrative.
If you go the fashion design route, you seem to have the necessary strengths to eventually start your own fashion label; high creativity (mars conjunct venus in 5th house + trine Uranus in first house... first house also represents the body, which is perfect for clothing design!), high individuality (Sun in fourth house square Uranus, and Ruler of MC mercury in fourth house, North Node in Taurus to "build something through your own efforts") to go your own way, and good understanding of what people want (Moon in the 10th house, and all of the other strengths from psychology). The only thing I can see to watch out for here is that, you don't want to start feeling like this is a superficial line of work (Sun square Uranus might give a disdain for this, as quoted above, and is further reinforced by other factors in your chart that gravitate towards "depth"). But if this is not a concern for you, or if you are able to work around this, then you should be fine.
If you wanted to go the psychology route, I think you would be more inclined to go the research route, or the organizational route, rather than the counseling route... but it really depends on what interests you and moves your heart. The research route will also give you an avenue for writing and the quest for knowledge. This can be supported by the fact that you have the ruler of the 9th house of higher education and academia (moon in your case) in the 10th house of profession.
Hope that wasn't too confusing! Would like to hear some feedback also, with regards to that interpretation.
