actually, it\'s a pretty good start.
My suggestions:
1.) lighten up the whole thing. The browns should come up a good bit lighter the closer they get to the ground and the white above the horizon should be extended with just a hint of blue for most of the way up a vertical face. On a horizontal face (like the top of the head) you\'d see pretty much only blue and not much white at all (really only on the edges of plates).
2.) The legs are cylindrical and thus would not have horizontal horizon lines, but rather vertical, running their length with the brownish on the inside of each leg as it\'s 90 degree is to the ground.
3. Any thing that faces up or down to a greater than 30 degree or so arc should reflect only sky or only earth. For example, pretty much the whole large face of the gun on the right arm would reflect only sky along with the top edge of the gun. The bottom edge and inside face would reflect only earth, so no need to worry too much about horizon lines there. Again, brown should be lighter the closer to the ground and the blue should be lighter the further you get from the sky.
4.) Finally, add a pure white highlight to the top edges of the plates (ie on the right shoulder) and determine your light source. When you know where your light source is coming from, you need one pure white dot to represent it in the blue on each panel that it\'d hit. That last part is optional but can help a good bit.
Hope that\'s helpful
