The layout is good. Meaning the spacing of the equipment etc. A few things I noticed adding to what Shermie said:
You might want to look at the subject as "scale". Meaning its a lot smaller than the real thing. As a result the light reflectivity isn't the same. To mimic this there are a few techniques. The easiest is to spray the entire model with an olive drab and then highlight each individual panel with a lighter olive drab. This gives it a 3D look and mimics the full scale reflectivity. Its really easy to do and the results are dramatic.
Another way to do it is follow what Mig has been doing the past few years. That's a bit more complicated but the results are better. you can look into that here:
http://ipmsstockholm.org/magazine/2003/01/stuff_eng_tech_afv_weathering.htmHope this is of some use.
Cheers!