My favourite miniature from The Gathering Storm Triumvirate of the Imperium boxed set is easily Inquisitor Greyfax. I wanted to try a NMM gold and silver for her armour which despite not being perfect has came out satisfactory. I will keep practicing it for sure.
I also wanted something special for her base so I scratched built this one for her which I am really happy with. Below is a video showing off how I made it.