If you want it to be a little more creepy you should add stuff that looks out of place, or makes you assume the worst. The best example I can think of (that completely creeped me out) is on barnabas' build. Theres an apartment with a bedroom that has a bunk bed on it. I think the bunk beds are pink or something quite childish. Not creepy right?
But theres a door, and its barred from the outside.
Dont know if I totally explained it right but it made me think that the children would get locked in the room behind it (couldnt open the doors in the server) but someone tele'd me in and I was more or less on the dot. Downright creepy.
To me the video just looked like a normal night with someone knocking at the door. Not really scary/creepy.