Paint and smear is no good... you are basically rubbing the faults out to thin so they dont notice so much... this isnt necessary if you colour match well... you can use paint to " fill" small chips in the PF.. if using Mylar then you have to fill with paint.. If CC etc then you fill with the clear or final coat. Always wash the PF down before you do the CC though as dust gets caught in the lines of the colour fill and shows up the edges.. wash with a damp cloth forst and they become invisible once cleared off.
I did a YouTube video of a wash once... let me see if i can dig it out...
... mmm - cant find it, if i could rememnber what machine i was working on i might have more luck
