Jack, so far this looks like a good setup. The characters are well blocked out in the scene, and the poses seem realistic in that they have a sense of weight and motion. Some questions and comments:
- Is there going to be a story of some sort?
- Is the walking character a robot, or is it a basic human stand in for a more complex figure? If it's a robot you might want to add some extras like hydraulic pistons on the joints, a more complex head, etc.
- You might try rotating the fence posts on the Y axis for variation so they don't all have the same top. You might want to add actual fence elements like crossbars, etc.
- I'm confused by the lighting. Is that the sun in the upper right? If so, why does the light source seem to be coming from the upper left? If it's the moon, you might want to add details so it's more clear. Also, some of the fence posts have shadows and some don't.
Please keep us up to date on your project, and thanks for sharing!