In that setting there's not much you can do about how the cars are sitting, the location, the background, the light (to an extent) so I wouldn't worry about comments on that sort of thing - They are what they are and that's a document of the event (I like the first 4 shots as these show the setting quite well).
The shadows are almost black, which isn't great if you're trying to show detail in those parts. There is however artistic impression which I think a lot of people either forget about or don't appreciate these days, so, if that's the look you were looking for I can understand it. I have photos I love that not many people like because they're not "technically perfect" as they see it as they are more of my (artistic) interpretation of it, which isn't wrong it's just not what people expect to see.
When you post on forums people will usually comment on the negatives rather than the positives, but hopefully it's all good critique.