Per rule 2 of the guidelines to the right, posts soliciting attention is not allowed. However, both to be a precautionary comment for others to see and because a good amount of effort was made in creating the video, I'll let this post slide. No other posts, same quality or otherwise, will be allowed here on.
As for the video, I'm almost certain you recognize the flaws in the piece. Listing some is the lack of high pitches (0:18), especially with the bridging melody before the instrumented vocals. One thing I beg for in covers is for it to mimic the source material as much as possible, only putting an interesting spin if it captures the genre, especially for something that's close to Jazz.
That's all I can offer without making a cover myself to prove more points.