I agree with Vail Marston regarding the coloured stones standing out too much but I'd take a different approach and use a wash to tone them down... and if I'm being 100% honest I personally would have done the mermaid only in a sandstone colour & then weathered her instead of all that colour but that's probably just a matter of personal taste, just my two cents anyway:-) however I have to say the build is really great, totally impressive. I love the large scale projects.