Working on Mountain Asset

So I have been trying to work on a style for the mountains that will look good on a small scale, while also having a more cartoon type aesthetic.  Here are some concepts down in Mudbox.

This is the mountain range:

 This is the top mountain that I cropped and sized for mobile devices:

Concept to Model

This is concept art and model for game asset.  Top-down tower defense type project.
Modeling and painting of mountains done in Mudbox.
Base of mountains done in Maya.