Hi, I really like your composition, your sky and the lovely aerial perspective in your far dark tree. I am too late to offer criticism you can use on this, so I am offering my thoughts, impressions, and scenario for IF you hadn't made any changes to the first posted version yet.
Your first painting's mood was quiet, subdued due to your values being very close. It felt like a very hot morning and a slow, dusty walk.
When you increased the contrasts and added the reds to the grasses, the drama rose.
I like both versions, actually
and may have offered a different suggestion on the first one--to add a pop of dissonant color to increase the intensity of the overall painting while keeping the values in the original range. A hint of orange (not rust), perhaps. You were edging there with the bright yellow on the path. I probably would have suggested the pop in the light green tree at a height above the walker amd in the edge of grasses across from the walker and lower, closer to the viewer. Turquoise would have worked, too. In either case, we are talking the the meerest pinch.
I am impressed you get so much detail in such a small painting!