Draw a light horizon line near the bottom
Sketch tall tree trunks rising from the ground
Add large overlapping canopy shapes at the top
Fill the middle with layered leaves and branches
Draw vines hanging from the trees
Add ferns, bushes, and broad plants in the foreground
Include a few smaller trees and saplings for depth
Draw curved leaf shapes with pointed tips
Add thick roots near the base of some trees
Place mist or light rain lines in the background
Add birds, butterflies, or insects if desired
Darken the shaded areas under the canopy
Use varied greens with hints of brown and yellow
Add texture to trunks with bark lines
Finish by outlining and cleaning up the sketch