Colours used: Sap green, burnt sienna, lemon yellow, phthalo blue (you could also mix ultramarine and prussian)

waterfall 1 waterfall 2

Sketch composition and paint in background

with apale wash of green+ blue and green + yellow

loosely paint in the right bank using green,

burnt sienna and blue

waterfall 3 waterfall 4

 Paint the left bank using blue + green + sienna

+ lemon yellow

 add some darks for the rock in the centre
waterfall 5 waterfall 6

 using blue + sienna paint in the water shadows.

 

 Add more water tones and some dark rock

reflection centre left

waterfall 7 waterfall final
 Add more darks to the right and left banks  Finished painting