it could form a interesting valley view, if gravel on both sides are higher, or you have taller plants to create the sloping down center.
Have a little undulating mini slopes along the path and anywhere on both side (front - near center) to create slopy feels. I think, these mini-slopes do have to be arrange highest to lowest from the back. Give is some pit-holes with mild depression.
Some interesting land features could be small wood tied with java moss littered on the floor.
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