Following up on Long Grass, here are some shots of the messy business of laying the grass. Looking back at my inspiration again:

I see a greener layer under the straw coloured grass.

With anything that is not stuck down removed, I marked out the boundaries of the grass lightly with a pencil, making clear the areas that should remain as path. I then started by laying a short green layer first painting the area to be grassed with PVA and then using the Flockit to drop the grass. This image shows it immediately after spreading with the glue still very wet:

The glue dries translucent so the whiteness has gone.

The long straw coloured grass was then laid by spraying the required area with Woodland Scenics Scenic Cement spray glue (a dilute PVA). The areas were masked with a combination of printer paper and paper towel. 

Some of the areas, in particular the fence, were masked by holding paper in front of the them while I sprayed the glue. Although it looks a mess here after spreading the grass, it only stuck to the areas I wanted it to stick to. A quick vacuum with a cleaned portable Dyson cleared the area and allowed me to empty the Dyson back in to the bag for reuse.