The hills are alive (part 2)

Using the same high-tech Paint-o-Vision approach as a previous post on scenery, I've been sketching out my summer project to finish the hills at the back of the circuit.  It currently looks like this...

...and here's the design which gives a rough idea of what I'm thinking about...

Unfortunately, in 1/32 scale my "mountains" are only about 4 storeys high - so a bit of artistic license will be needed.  Or else you can just pretend they're a lot further away!