Such a well produced track, top notch recording and arrangement (love all the old school UK TV references.....Arthur Daley forever!).
Be fierce in your encouragement, kind in your criticism and try and remember that the art of a good critique is not to make someone else's mix sound like yours...but to help the mixer realize their own vision.
https://soundcloud.com/hbguitar
https://soundcloud.com/hbguitar