Thanks! The flames were a technique I learned over time. I used to use similar layers with an airbrush and s-curve stencil. I just applied the same methods to using a paintbrush (and was a bit more careful) and voila! There's some pretty awesome tutorials out there, like this one,
http://darkfuturegaming.blogspot.com.au/2009/09/bobinator-explains-his-realistic-legion.html, which detail the process you should use with a paintbrush as opposed to an airbrush. Check it out, it's an awesome article, plus that guy's models are freaking amazing.
The priest and devil-thing on the back just took a bit of patience and a 000 paintbrush, haha.