I needed the title to understand what I was looking at. Then I was able to make some guesses.
It reeks of old wood and old and heavy machinery. The grinding wheel? I think that is what it is, is especially impressive.Your color range appropriately suggests age and warmth.
After that, I think there is a bit of a problem. Is it a contemprary portrait of a couple, a vistor and a tradesman, or a study of the mill? The interaction between the couple seems totally divorced from the mill setting. As it stands, they might be on a bridge, by a river- the setting feels irrelevant. At the same time, the girl, while looking happy, doesn't appear to be communication with the man - although he is looking at her.
In conclusion, There are a number of elements in the picture that offer opportunities but here I don't feel that they are "gelling" into one story for the viewer.
Of course, if the shot was taken as a record of a particular person and their visit to a particular place and the image was made to share that moment with friends, that's a completely different scenario.