An amateur is someone who does something for the love of it. So I would say you are an amateur cinematographer. People who want a crit of their work post in the user video section. I remember your detective writer video being ok.I don't consider myself even an amateur at cinematography
As for your reel, well it's a bit early days, I think you've got some nice images but nothing that really stands out and some which should be taken out. eg the skiing shot. If I was putting together a cinematography show reel I would show whole sections of movies I've made rather than just one or two shots of each movie. This is so the viewer can see you can put a piece together and not just take a snap shot together.
I suppose it depends on the purpose of the reel and who it is meant to be shown to.