Updating my progress with the opening scene, covering panels 1:1 and 1:2 of my storyboard. Things are taking longer than I would like, so I hope to speed things along in the coming days.
For the grass I've used a paint effect which I hope is fine as it seems to work pretty well, and that it would be a bit of a time sink to painstakingly model and animate individual models of grass. With the grass in the direct foreground, I hope to render this out separately to be able to create a focus pull transition to the mushrooms in the midground, where the background will be filled with a matte painting.
Here I've modelled a few variations of the Ling Zhi Mushroom to populate the scene.