Are you going to take the displacement route on the sandball because right now it's looks more like an ice cream cone or part of another delicious treat. Also, I think the arbitrary lighting is working against you, it created overexposed areas, blobby shadows(your objects look like they're floating) and it flattened the background. Though, some of the spots look like an FG issue, might want to push FG filter up to 1 or even 2. Happy shading and stuff