I love the beginning. The melody is kinda mysterious and the synth choice is noice. I fucking love how the drums kick off. Just don't be too repetitive with the melody and shit. The snare can be a bit more heavy. Ok the build up part just before the drop is very detached from the rest of the song but thats fine. Shit the drop is riddim and I didn't expect that. I like the end where everything returns back. I think concluding a song with a bit crusher is a tiny bit too cliché for a dubstep, but it can be your style.
Overall, I enjoyed your song and I am looking forward into your production. And yeah, you are not that giving up!