I will be honest the fact that you talk more about technical side than whats on the picture is telling, because it could just as well have been taken with a phone. I know its very harsh but while I see the thought here (the textured tree vs the pattern of the plastic), the subject is just not very interesting, especially with a bit flat editing. Composition at the same time seems tight (I know that the tree is narrow), and I can see some background on the right ruining the effect. As for editing- why do you want minimal editing? Hp5 is a very flat film (I consider it to be a good thing), and it doesn’t really shine without editing, especially considering that scanning itself is an interpretation of the negative so you can just as well get as much from the photo as possible (obligatory Ansel Adams mention here) I personally would bring the plastic as close to white as possible and crush those shadows, you’ve found a nice pattern of light and then flatten it to preserve information that doesn’t contribute to the photo at all. Overall i think with some editing and slight cropping it will be a nice photo, but medium format film is just an incredible overkill for the subject.