Congratulations on your first listing John and welcome to Folksy.
It’s a lovely photograph, what a beautiful view.
Not sure I’m in a position to give a photographer advice regarding product images but what I would say is use all 5 image slots if you can. Even if one of those is a photograph of you taking photographs. Perhaps one of you (or someone else) holding the print would give a sense of scale. I know you have measurements but people don’t always take notice of that. Might be worth giving the dimensions in metric as well.
I would pad out the description a bit, for example say what colour the mount is (is it bright white, off white or pale grey etc…) monitor settings can make a huge difference so it’s best to be clear. And what type of paper the photograph is printed on, I see you have that information in the materials but again, people don’t always spot that and may not know what Luster pro paper is, I wouldn’t know if that was smooth, textured, glossy or matt but would quite like to know that sort of detail.
Postage seems high to me but to be honest I wouldn’t really know the cost of sending that type of item. Perhaps you could explain a bit about packaging (box, jiffy bag etc…) & how it’s being sent (courier, signed for, first class) just to clarify why you are charging that amount.
Also if I was looking for an item like that I would likely search for something along the lines of ‘landscape print’, or ‘landscape photography’. Something less descriptive and more generic in your title is more likely to get you found in searches.
Anyway, I hope that was helpful in some way. Good luck with your shop.