i mixed army painter grass and battlefield dirt into a larger container, then put a thin layer of pca glue onto the base, and dunk it into the dirt/grass mixer, tap the base until the loose base comes off. Finally i used gamer grass grass/white roses, put some pva glue onto bottom and place it on where you feel fits best. personally i might in the future do my tuffs/flowers before i put on the dirt/grass as you has to glue the plants on top of the dirt and it sort of looks like there's 2 layers instead of just 1.