This sculpted bas-relief is by Bob Murch of Pulp Figures fame, and is included in his Mad Guru set of Thugee. I own most (possibly all, I’ve lost track) of the PF Thugee packs; they’re among my favourite figures from Mr. Murch and regularly appear in our Pulp Alley games. (Thugee previously on the Warbard here and here!)
The bronze relief, though, has sat around unpainted and ignored for at least a year until it fell into the current round of “clear off the painting bench” mania! The main colour is GW Dwarf Bronze over a grey primer, then a coat of GW Gryphonne Sepia wash/ink. A very, very thinned green ink over that for a bit of verdigris here and there, and finally a few highlights back with straight Dwarf Bronze. (Note that all my GW paints & washes are from the previous range, not the current GW paint/wash range, and I’m afraid I have no idea what the current equivalents of these colours are!)
The base is just a scrap of plastic sheet and a bit of Milliput with some flagstones scratched into the putty to tie it in with the flagstones already on the pewter. The whole thing has come out very nicely, and really shows off the incredible details of the piece, with the six-armed Kali with her necklace of skulls, skirt of human hands and forearms, and one foot on the body of her consort Shiva. (Good stuff on this Wikipedia article about Kali, btw.) Mr. Murch did his homework!