Each paragraph is relevant to your proposition. Great choice to include quotes from other crew members that expressed how excited they were to work with Hitchcock. You also offer interesting perspective by choosing a director who was successful among his peers, fans, and critics, who made the shift from mainstream into academia. Substantive

It is a great choice to include how others who worked with Hitchcock felt about working with him. It was actually a great move to not quote Hitchcock directly, but to describe his character through his actions and through the quotations from others. This was a great strategy in presenting your

Overall, there was a very clear logic in the paper and you sustained your reasoning from start to close. I also found it good that you began the description of Hitchcock's film career from the beginning, and not just from the point where he became a director. You make very clear connections between Hitchcock's early career to the legendary director he grew to be. This lead quite well into the close examination of Psycho, an example of his superlative direction.
Grammar

P1S2: take out the word "even" or leave it, but put a comma after "posthumously"

P3S1: you should name some of these techniques instead of mentioning them in the abstract

P3S2: quotes of a certain length need to be formatted differently from the original text

P3S4: the citation goes outside of the period, not inside and there should be no comma after the quote