I had a lot of fun with this piece a while back......nice job
You could increase the contrast levels slightly on the chest and stomach armour with some washes.....and I would suggest the 'verdigris' is too blue.....pic shows a more realistic shade...
Great piece for your first bust though
View attachment 225421
Regards
Ron
Here is a link to the one I did.....http://www.planetfigure.com/threads/im-back-scale-75-abyssal-warlord.63999/
As for effects such as rust and verdigris....you can't get better than these....http://www.modelmates.co.uk
Hope this helps
Ron
Great finish ......................well done on your win