Trying to make a model orient with a path using CZML but I couldn't the example CZML Path in sandcasle doesn't help because the object(the image) does not orient with the path.
Checkout this example: http://cesiumjs.org/Cesium/Apps/Sandcastle/index.html?src=Interpolation.html&label=All
It uses VelocityOrientationProperty to automatically compute the correct orientation. You modify your image entity once its loaded to use this.
Hope that helps,