Yes, orange peel and egg shell are terms for the rough finish that paint sometimes dries to. The purpose of polishing is to level the paint, which can be done in certain cases with a cutting compound only. One thing to keep in mind about Tamiya metallics, pearls and mica's is that they don't gloss very well and work best with a clear top coat. A clear top coat will do two things for you, firstly give it way more gloss and secondly, give you more layers of protection from polishing through to the primer. I would advise you to get a polishing kit that consist of the polishing cloths, usually 3200 thru 12000 grit. This type of polishing is the best way to eliminate the rough surface that is beyond what the compound is really made for. Just hang on to your patience and practice on and extra body that you may have lying around.
