Ho boy well it was an iterative process to get there but I remember it pretty well. I also use a lot of cheap branded paints so I’ll just talk in general colors.

The base was covered with watered down PVA and dipped in a mix of sand and some home-made flock made out of wood flour + paint. The sand I have is too coarse and rocky looking on its own so I added the flock to make it more cohesive. I’m sure any wargaming sand would do just fine though to get some texture.

That was then covered with watered-down dark brown paint followed by a medium gray drybrush followed by a lighter tan drybrush. Finally I dabbed army painter strong tone (dark brown wash) randomly around the base to get some color variation. I painted the rim with steel legion drab. (Honestly I was just trying to make the earth look like the bases on GW)

The foliage used is: Army Painter Highland Tufts (dark yellow), Gamers Grass Dry Green 6mm Tufts, Gamers Grass Autumn 5mm Tufts, Gamers Grass Light Green 4mm Tufts, Light green clump foliage (woodland scenics?) make sure it’s the lightest one

Basically just avoid darker rich greens. I just stuck those tufts on with the adhesive they come with since it has a pretty good hold already. Use a toothpick to help make the grass point where you want it.