Take Some Pictures See If They Might Make Good "Disney Landscapes"

step one - search Evyind Earle on the 'net and see what his work looks like. Step two take some pictures of the landscape that you can use - need to show layers. Here are two from nearby.

Next think about how you can stylize and Disney-fy your image and add other elements if you like. See below for examples.
Here are some intermediate Disney paintings. Note the basic structure uses layers. The first one is missing the dots, however it is a strong layered image and a figure has been added. Note the way the yellow leaves hold the foreground.

Here is one of Mt. Si that has been very stylized. the use of dots add to the sense of imagination.

Check the rubric and scale - again, we are looking for -
curtains of light that create layers of background seen as big shapes of color getting lighter as they receed... a monochromatic color palette dominated by blue or bluish hue ... lots of small details on the closest layers ... details often made of compliments and analogous colors with high contrast ....