are you really using ambient lighting? looks like you got a few spot lights or something that casts shadows
ambient light is something i refuse to use (it just seems fake)
it looks like you should light the flames with a point light (like banksta did with his lamp render)
and then have a low intensity directional light shining through the windows, colour it grey and call it moon light
that's a "Ch" pronounced as a "K"
Computer skills I should have:
Objective C, C#, Java, MEL. Python, C++, XML, JavaScript, XSLT, HTML, SQL, CSS, FXScript, Clips, SOAR, ActionScript, OpenGL, DirectX
Maya, XSI, Photoshop, AfterEffects, Motion, Illustrator, Flash, Swift3D