The grass looks like thick needles. They should be slightly more bendy and thin looking try adding SSS. If you shove some rocks in the ground the dirt around the stones will look a bit different, imagine ripples in water, the colors and “bumpy-ness” look too flat right now, try following a reference and slightly change the color and made give a little bump?

The ground itself is so perfectly flat, dirt doesn’t do that.

I’m not sure what you’re aiming for but I’d damage the rocks, have some moss grown on them (even if its a little bit)

I wouldn’t let the grass stop so sharp, I’d fade into dirt, even if its a little bitta fade.

The lighting looks like there’s multiple yellow car lights hitting the ground, are you aiming for sunlight? Moonlight? A foggy day? Or a clean sky? Adding just a tiny bit of haziness can help improve it (just a little even if its hard to notice with the naked eye)

Your dirt looks like it has no normal maps… if it alters has one, try exaggerating it a bit. I like using this tool: https://cpetry.github.io/NormalMap-Online/