Enn'llien SteamTank (ANBG Bucking Gustav) miniature for RPG

In a Pathfinder RPG campain, i'm playing a Half-elf Gunsligner/gunsmith and inventor named Enn'll Nothridge who's life work is to create a serie of steam powered medieval mobile artillerie ( in other words, tanks) which are named after him.

This one is from my "All New Big Gun" series and NOW we are getting serious, it is equiped with a huge canon so big i had to double the rear axels, then double the rear wheels so the tank can pivot backward on the rear wheels to absorb the recoil of the sh