The song has potential but you do need to work on the pitchiness as well as a way to get the vocal sit in the mix as, at present, it seems like it's in another room as the instruments.
To help with that I suggest you turn the reverb off on the instruments before you export them to whereever you record your vocals and do your mixing.
That way you'll be able to use various doses of the same reverb so the vocal and instruments seem more together.


Cheers
rayc
"What's so funny about peace, love & understanding?" - N.Lowe