No, Paint as Normal. First Use 220 in an Up/down Motion, Then step up to 320 Grit in the opposite (left/right motion). After that, use acetone or something that evaporates (like rubbing alcohol) to clean off any dust. Spray with Primer. After that use 600 Grit or 1000 Grit (The reason why its so high is because if you use 400, you might cut through. With 600, you get a good cutting action, but the risk of reaching the case isnt as high). After you have sanded the 1st primer layer, wipe it off with a cloth. (btw, use Water and soap to help with the cutting action when you sand a paint layer).
Then put on a 2nd Layer on Primer. Repeat the same thing (sand with 600 to 1000, then clean) Now your ready for Color. Put the color layer on and let it dry for about 2 days to be safe (depending on Humidity, temp..etc). Then sand it with 1000 Grit. Dont worry if you get through to the primer. Your going to put a 2nd coat on. Worry if you get to the case, then you have to restart, So Be careful at this point!. Once its all clean, put on the 2nd coat of paint. Now sand it again with 1000 Grit. Clean off the case of any dust from sanding, then put on The Clearcoat. Clear coat is somewhat hard to see, so you may have to angle it to see the orange peel. Becareful at this point to! Sand with 1000 Grit again. Now you can either put on another coat of clear coat (I forgot, its been a long time..) or Go on with the next step:
After letting the paint dry, Sand it using 1200, 1500, then 2000 Grit. Put on some rubbing compound and rub it it! Rub it as if your waxing a car, or a cleaning a window
Each time you sand, you get rid of Orange Peel and anything (like dust, bugs..meteors..) that falls on your paint when drying..
I myself used this guide:
http://case-mods.linear1.org/case-mo...r-case-part-1/
You may notice I used different grits, Thats because it comes out thin, atleast for me it did.