This is an outside read from the screenshots rather than from the pack itself, so discount it accordingly. The thing that stands out to me is the ground to ground boundaries. In the settlement shot the sand meets the paving on a straight cell edge, which is fine at that zoom and starts to read as cut out once a character is walking along it. If there is a version two in this pack's future, a small set of edge tiles for sand over paving would change how the whole thing assembles more than another twenty props would.
Separately, putting every sprite in the screenshots at low resolution is a good call. Most asset pages do not let a buyer count what is in the pack before paying, and yours does.