while I wouldn't call myself more experienced, here are a couple of ideas I would probably try:
- Use long lenses, so that you can include only the green field, distant view, and sky to simplify the frame and the message. The city skyline in the first image looks interesting, you could maybe invoke a feeling of 'golf after business'?
- Shoot during the day, in addition to dawn/dusk, for that warm, sunny day look.
- Avoid shadows and dark areas in the frame, they make the place look less inviting. I could see shadows being helpful to capture the undulations of the land, or maybe as tree silhouettes in the background, but otherwise I'd rather show bright green fields. In the fourth image for example, the area after the sandpit in the middle looks promising. Lots of green with sparse shadows.