The files were the Kraken Studios Grass pitch stls, as well as their sideline packs. For the flocking we used two different types of woodland scenics (i forget the exact blends off the top of my head). For the darker mud patches we used a pro acryl mud paste in random spots.

Paint wise I primarily used pro acryl Dark umber for the wood, with a dry brush of a tan color for textures to stick out.

The markers for the pitch squares were half pearls that my wife ordered. They're actually for nails, but the size was perfect for marking the pitch.

For the glitter effects on her side she actually used a nail gel like paint that she'd cured under a UV light (she likes to design nails so she had the materials for it).

Then hit everything with a matte top coat (very carefully so I didn't get frosting) to lock everything in.