Nature Assets Modelling

I recently learnt some blender modeling and decided to model the first thing that came into my mind, nature assets. I did some grass, rocks and stem plants. I used the saplin tree gen to come up with some small trees/shrubs that were low poly. Here’s a look

After I had created them I decided to use them in some small nature scenes.

The nature assets can be found here if you would wish to try them out. I also would like some advise on volumetric lighting, because mine looks a bit “iffy” for natural lighting. Thanks guys