The metallic on the CAT and Cup looks good, due to the wash you've given them. You've picked out the different parts of the model well and the skull in particular gives a nice focal point.
The Red looks a little flat and an edge highlight would really make a difference. A touch of rust on the tracks might work too (but I wouldn't over do it).
Perhaps choosing an alternative spot colour for the wires e.g. light blue, yellow stripes etc would add a little more variety.
Gems...Because you've gone for a single block colour on the cup, those gems need to really pop. You've got the base colour and the wash, for a basic gem... now add a light red to the bottom 1/2 of the gem (creating a crescent where the middle hollow of the 'C' is pointing towards the intended light source), then use an orange (or very bright red) to create another crescent on the bottom 1/4 of the gem. Then add one or two tiny white spots in the opposite corner of the gem and you've got yourself a shiny gem.
This picture is better than my description and shows how you can get increasingly more detailed.
Hope this helps!
Cheers Laney
Subject: A cup and a CAT 
Fri Mar 07, 2014 4:47 pm
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I was like you when I got it though, I practiced and practiced before I touched the terminators, there is so much great detail on the minis that I didn't want o lose any of it!
