I bought some brush armautures in the past, which I used a couple of here in this project. I tried to glue them down, but with the small glue area and the top heavy brushes, this did not work out (or I was not patient enough). So I mixed up some brown stuff and stuck the brushes in.
After the brown stuff was dry, I used some more brown stuff to sculpt roots.
Next, I glued 6mm static grass on the armatures with my DIY static grass applicator.


