Congratz
1 - Congrats on making a vocal track. Many people are a bit shy to sing on NG and there are TONS of instrumental tracks but never enough vocal ones.
2 - Nice backing track, quite well mixed.
What I would fix:
- I would put a low cut on the voice (you can safely cut out everything below 125Hz or even more).
- Layer down some backing voices and play with panning.
- If you pitch correct do it smooth so nobody can tell or do it extreme (T-Pain effect lol)