I don't now exactly what you're trying to achieve here, but It's good enough to enjoy.
Volumes & Compression
I think compression is really necessary here. I would have used a little more in this case, because softer vocal parts occasionally "drown" in the backing track during the chorus. I also think it would allow you to increase the volume of the backing track, so your vocals "sit in the mix" a little better.
About the backing track. Even though you may not be able to correct it, but this may be of use when you start producing your own instrumental tracks. I hear that there's some compression on the bassdrum. The kick softens during the chorus and gets louder during the verse/bridge. As a radio listener I'm personally accustomed to hearing a bass-drum with a steady volume. It gives the listener a certain stability and volume reference. Meaning, you don't have to jump to the volume-knob halfway the song because it turns out to be four times louder.
Reverb
The amount of reverb makes it sound like you're of a concert hall. I'd use a little less reverb for a more "studio" sound. But that really depends on how YOU want it to sound.
Normalizing
I'm not sure if you normalized the track. I think you did, but the vocal track peaks too much.
Vocal Performance
Overall, you rarely sound pitchy and sung confidently. Great!
However, I also noticed that your phrases were behind the beat a lot of times. This could be the result of style. In that case, you can dismiss the following feedback.
If you intended to sing it with the same timing as the original artists, then I have to conclude that there may be something wrong with the recording setup that causes latency. It could also be a matter of timing. I doubt that it's a timing issue, because I didn't have that impression when I listened to your live recorded YouTube-video's.
All in all, keep up the good work! You're very skilled.