Creating hard and soft edges

Wet-in-wet can create diffused, soft edges, which tend to recede, helping harder edges to stand out. Aim for a balance of both in your work; too many soft edges can lead to a lack of any obvious focal point, while too many hard edges can make a painting look overworked.

Add a stiffer mix of pigment to a wet wash to darken, yet soften, reflections and create moodiness