Paul, this is a lovely rendition, and I think the sax solo is really good ...
As as far as the vocal, it is not bad by any means, but I get what Gary is saying ... what I find with people who are just starting out singing is that there is an emphasis on two main goals ... one is the correct pitch, and the other is 'fitting the lyrics into the right space' ... you have the pitch part down, but some work is necessary on the phrasing ... I would suggest listening to various artists sing the same song - almost always available on youtube - and singing along with them ...
I also find that musicians who are trained in the classics have a difficult time with this, having constantly practiced to play every note as written, and this is also reflected in their singing ... but DON'T STOP ... the only way to improve is to continue doing it ... BUT as my accordion teacher used to tell me "Practice doesn't make perfect, only PERFECT practice makes perfect" ...