Your voice does not sound natural (read: nasal), sounds like you're repressing your voice. Try to sing naturally (voice lessons?).
<< You slur/don't enunciate well (that's seemingly popular today though).
You almost sound a half-step off key. Are you trying to do pop, rap, hip-hop, country?? Sometimes I can't tell.
The recording/remixing is poor, your voice jumps in and out at times (farther from mic, closer to mic type). EX: <small voice> your love sets me </small voice> <big voice> free </big voice> (see end of song).
Your range is not very good, all the higher notes sound forced, and the lower ones sound like a burp.
"All I want" sounds like marvin the martian ... where the harmony man? >>
And he was being kind Dorko.