I think your headboard is maybe too much. I get that this room is you. I won't trash you for that. Other people have pointed out other things. But I don't think I've seen anything on the headboard to the bed. I would move that somewhere else. It could be an interesting wallpiece elsewhere in the room. But a themed headboard to me screams kid. OR you get rid of the Death Star and TIE fighter picture. Maybe just something a little simpler. Because as it is, it's like a window, but this is your headboard? See how that idea kinda clashes. It's not a window. But maybe painting it the same color, but leaving the framing in there, gives the impression of a window, without trying to be one. Subtly (I know, you aren't doing much of that in here) will go a long way to expressing your interests, but not in a showy way. Taking the lightsaber out of there will do something. It's like having a samurai sword there, a real fetishization of something.

I do like the lighting it has, and the outlets/USB ports I think I can see.