This was a large project for me and the first time I'd attempted to make a diorama. The project features a base with embedded skulls, supplementary features like the Sentinel/Magneto monument and the Sentinel hand, along with no less than 7 individual custom figures (Cassandra Nova, 3 Wild Sentinels, 2 Sentinels and Bastion).

I'm not sure how's best to show this here on the Realm as it's quite involved, but I'll be showing the individual parts over the next few days.

The base is made from polystyrene coated with grout, and then sprayed with Plastikote Manhattan Mist.
The skulls littering the base are from a fellow customiser, Mike Barrera. They are semi-buried in model railway ballast.
The Sentinel/Magneto memorial head, like most of the base, is an homage to the destruction of Genosha in Grant Morrison's New X-men. It's made from a plain Hallowe'en mask with a lot of sculpting and styrene.
The Sentinel hand is made from an artist's wooden mannikin hand with a lot of sculpting.