Those are pretty good. Nice use of tones and composition. Also thanks for showing me the art battle thing, definitely a great watch. If I ever find myself in Canada I'll make sure to attend to one!
For now though, I'll suggest that you get a broader horizon to work with. Do some things with daylight, rather than the nightly scheme you keep using, or go completely different and draw animals or even humans! You're great at what you do, but it seems really specific. Keep at it though, if you want to continue drawing like this it's fine too, don't let an opinion stop you from doing what you enjoy.