The lenses on the cannon have been 'Ardcoated so they look glassy. The cannon itself is simple to do, mainly drybrushing metals with a few varied colours to add detail. The construction itself is pretty straight forward once cleaned up, except the breech block - that required several attempts after heavy filing to fit without forcing the cannon barrel apart.
Now, do I base it like Zen 40,000 has over at his blog here or leave as is? Comments welcome... (2 painting points btw)