I love the stone shield, but the copper/gold areas are too flat...and maybe not reflective enough (at least an aspect or reflectivity)
I find aso the angel too simple...it doesn't fit well with the rest of the mini
I think you should spent more time on the pictures. Comine different angles/views in one picture, choose a neutral background. Correct the colors with a program like paintNET or gimp. I think this will improve the ratings in general. I think also you have to work more on the gold, more contrast. The rest of the mini looks quite good!