Tfantoni's Sketchbook

[Nature]

here's the final ^^

I think your client will be satisfied. But I think you can really improve your painting by leagues if you take extra consideration to one key fundamental of realistic rendering (with any medium): which areas of shadow should have hard edges, and which should be soft or lost shadows. Hard edges are arguably more important than soft vague shadows because they give more structure, but having a subtle interplay between hard and soft edges simultaneously creates more realism AND visual interest.

As this painting is right now there are almost no hard edged shadows than the outer edges of the figures that separate them from the environment. In most of the painting the separation between light and shadow is vague - sort of just blends into another almost like a gradient. This gives the impression of less contrast, the forms appear flatter and more indistinct, even in the values are right it just looks doesn't look very real. In Photoshop its very easy to create hard edges using selection tools.

When you look at artworks by modern and old masters, look for how they dealt with this problem of how to separate light and shadow. Take note of where the hard edges are, where they chose to soften them out. A lot of times especially in old master artwork its very subtle but it makes all the difference to our eyes.