Hey!
I like this one!
The guy above is right, don't be too much critical with your own work, it' not worth it, and I say don't aim perfection (at least I'm trying this way), it just makes people stressful.
Anyways I think this is cool and if you want 1 little suggestion on the technical/compositional side, I honestly think this piece is great as it is already, but for example in a longer map in a game this would be a little bit short and repetitive, but that robot factory thing is kind of true :D
Keep it up!
Put up some more of this and I'm sure you'll get into the Audio portal!
( PS. I don't know Goth music too much, I thought it's some kind of rock sub-genre, maybe you messed up the genre selection by accident? I think this would have more views/reviews in the Electronic-Industrial or Video Game or maybe Ambient category, just sayin )