>>7643854
Good job making different edges for the form and cast shadows, really helps read the picture easier. When it comes to modeling/shading a subject, try not to look at the changes in tone as being separate. It ends up making that subject as if it were built in parts rather than as a whole. For instance the orange pumpkin has been segmented too much even though it blurs into a more flat tone at the stem. For the blue light hitting the shadow, light can only lighten objects. The problem with a strong blue light is that blue is an inherently dark hue, it'll only be a touch lighter than the shadow. It'll look like light due to the sheer saturation difference. Shadows are a lack of light information after all. Also keep reflected light in the shadow family, keep it subtle and restrained.

Most importantly, have fun painting.