Thanks Q, S & G! Got the first layer of paint down tonight, I'm using revell 371 (star destroyer grey) thinned a bit more than usual. I'm trying to build the layers up slowly using a thin mix. Its hard not to obliterate the pre shade, sometimes you dont know when to stop lol. I think to much pre shade is a bad thing so its hard to get it just right. Once its its weathered it should all tie in (hopefully) and I dont think this is going to be clean! As Solander says its a troop carrier right? In and out of battle zones... 
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