Nice start -
Two quick ideas that can make a big difference. 1. Add some black dots to the end of the handguns to represent the inner barrels. 2. Add some highlights to the warrior priest's face - cheekbones, nose ridge, point of chin and forehead and this will make a nice contrast and make the face the focal point of the figure - always worth spending a little more time on character models. A few well placed highlights will help with any issues you have painting eyes which are always a pain to get right.