Col if I'm being honest here,.....I'd say your vocals are really improving in many ways,...I would however suggest you try to make every song you sing "YOUR OWN" by inflecting little ad-libs here and there and changes to the lyric delivery as to create a style of your own and Not to sound exactly like the original recording making it "karaokeish". Also choose the "quality" of you backing track versions very carefully as many really are low quality.
But all in all Nice job with the singing on this tune one of my favorites.

BTW check your email..

PS have you given up playing keyboards or your mixing the two with singing tracks also now?