Presentation as a JOB

I was driving from school back home and an idea popped up in my head. Can improving presentation be a job for me? Since I really enjoy creating presentation and thinking about how to improve presentation, how should they present it better. So I wonder can I do a business or make money from that. I started thinking about who should be my customers? How can I gain enough revenue to feed myself? and Is there a possibility to expand into a larger business?

Who should be my customer?
University professors can be my customer. Since part of their job is to give lectures to their students. I have seen so many bad and boring presentation in the class. The slides and presentations are boring and hard to follow and understand. They may use too much words and try to add everything in their slides. So there is a channel for me to sneak in and improve those presentation to be more visual base, easy to understand and lead toward what audiences want. However, there are two or three things that I need to concern if I'm going to work with college professor. First, some professors may use a presentation that they got from the textbook publisher. They use it without making any change. Possibly, they don't want to waste time adjusting it or think that it's the best in the world. So how can I deal with this, should I go to talk to publishers instead and help them improve their presentation instead. Secondly, EGO, how can I approach those professor and maybe tell them that their presentation is suck or extremely boring. They have their own pride on being a PhD. so if I haven't have enough credibility. It will be very hard to convince them to follow me. Lastly, each subject requires specific knowledge especially in science. I need to make sure that I have strong basic knowledge enough to make any changes. So this job will require a lot of extensive research on the subject what I'm going to deal with.

Revenue?
For sure, I can charge project by project but how much should I set up the price and how to evaluate my success. Can I use student understanding in the content as an index to measure my work? Or I even think about set up a free agent part in the university who will rotate to each college and help professor in that college improve their presentation. If it works this way, I will gain steady revenue from university. However, if it's worth to work in the university, instead of the being a independent company.
Let do an easy math!
- One project can take me about 7 days to complete!
- There are let say 45 working weeks. So I can finish 45 project per year
- Average income for MBA student is about 60,000 dollar per year
- Each project will be charge about 1,500 dollar
is this price too high or too low? Will college professor pay me at the price?

How can I expand this business?
It start with my passion in creating presentation. I don't know if I recruit others to do my job, will the quality and idea still be the same. I may need to separate tedious take out such as finding images, compile data, research on specific topic and control some key important factors such as flow of the presentation, format, and overall. So it can be expand in the larger project, if I have enough customers willing to pay me.