While the lighting is fairly decent for a bathroom & hallway setting, generally, it's too easy to go overboard and have flat, even lighting instead of dramatic lighting. Just a bit of ambience and shadow can go a long way.
A great example is Twelve Bucks (warning: mild language), which, while super stylized (and not exactly fitting of your setting) is a great start to learn from. Bathrooms, in particular, tend to have a very specific sound & lighting IMO. But for a first film, this is great!
For pacing, which is very subjective, I'd say watch as many brickfilms as you can to get your own sense of what's good and what's bad pacing. Personally, for comedy, I think this is a great fast-paced comedy But You Can't Do That, and this a great slow-paced comedy Aladibababad.
This video (Joker Prank Set-Up) could have benefited from shifting pace a bit - as is, it seems just a tad monotonous. However, part 2 (Batman Surprise) works better, since the audience is anticipating what's coming - so it's pacing is nearly flawless!
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