Instead, use the Neon for Revit 2012 add-in to access the service directly from within Revit 2012. Revit files cannot be uploaded directly to the rendering service. Procedural textures, (Checker, Gradient, Marble, Noise, Speckle, Tiles, Waves, and Wood) are not supported. Only image-based textures are supported at this time. Rendered results may look different after this translation.
The rendering service relies on 3D views created in Revit.
Set up 3D views, lighting and other parameters in Revit, exactly the way you want them, before using the Render Online feature.
Lighting: Sun & Sky presets, Light families with IES data. Modelling: Families, Boolean Operation, Alignment, Temporary Dimensions.