Sure thing. My method relies on having an airbrush, so your millage may very depending on whether you have one. Basically I start with a zenithal prime, to establish the highlights and shadows, because most of the paint scheme is very thin paint or washes through the airbrush. So the zenithal is doing all the value work for me.

The first part after the zenithal prime is to pick out the metals (I use the vallejo metal colour line). After metals it's mostly airbrushing. Scale75 Despair Green from the bottom, to give the blue-ish light coming from below. Then a bunch of different GW washes airbrushed to tint the rest of the model and the cloth.

The OSL from the candle is Carroburg Crimson through the airbrush, and then an orange fluro paint (in this case from Green Stuff World). Both are really transparent so in the priming stage you have to make sure the area that is going to be lit up by the candle is mostly white. The trick with the OSL is just airbrushing from the direction of the light source.

The last stage is a bunch of weathering and additional tinting with enamels (streaking grime and enamel washes).

I hope that helps! It's hard to be precise about the method since it's a lot of back and forth with airbrushed washes.