great work on the statue, it looks really cool!
you may want to smooth the blending on some of the OSL areas could be smoothed, like on the chin and the throat guard, and highlight slightly the dirt area under the cheek/jaw guards. it feels slightly off to my eyes.
as for the base, those colours sound good. you can also desaturate the green a tiny bit by adding a drop of red in as well. the rocks will be very wet from the waterfall, so consider what that will do to the colours of the rocks, hey may not be as bright as you think. play around and see what works best for you.
as for my name... i have had a lot of different reactions to it. it's a bit of a private joke/innuendo. just typing meaty is fine, or if it really disturbs you, call me by my real name: Claire