Good grief, I'm not going to hold back as I think it's terribly unfair to sugar coat it but my god say "fuck it" and shave that head. I know I'm going to take a lot of heat for saying it but it's only because everyone on this forum wears and many cannot shave their heads. After looking at your second pic I can promise you your friends knew, it does not look natural at all. I've seen guys on here with much more natural results but even still, it's not worth the time and money for your right now, please believe me. You are going to waste so much time on tweaking the hair, attaching/detaching, obsessing about it etc that you won't be able to focus on your studies. That's just plain dumb to recommend you do that in my opinion. Shave your head and clear your head and focus on school.

In my opinion this is as sound advice as you can get right now. And I mean that sincerely and wish you no offense.