I have control bugs. Like, if I drag around a window using my trackpad, I can't seem to 'drop' the window; the state doesn't change and I'm stuck with a window attached to my mouse cursor.

I agree that I'm not sure what value I'd see, as an employer, in a "visual designer" whose CV rips off something else's visual design. Much of the design doesn't belong to you (never mind the ROMs used in the Game Boy emulator) so my alarm bells about how much you respect IP would be going off ("this guy's gonna get us sued").

Now, on the other hand, if this were a display of some HTML, CSS, and JavaScript skills, I'd understand more, but then the title OP has given themselves seems off.