PDF Portfolio Feedback for Grad School

Hi All - I am applying to an HCI grad program that requires a PDF portfolio. Would anyone be willing to give me feedback on my current version?

Please keep in mind that my career experience lies in Product Management and that I am self-taught thus far in UX and HCI. This is my main reason for wanting to pursue grad school (to gain an understanding of the consumer psychology underpinning strong UX and improve my portfolio)

Portfolio: Imgur: The magic of the Internet