I used shellac/lacquer that I brushed on instead the spray on. Much more shiny.
I had to add some glitter paint to the background, because when I applied the first spray on coat of lacquer there was some discoloring to the silver paint.
I then tried to repaint with the original silver, while covering completed Barbie with tape, but of course could only get so close to the edge, since I was using silver spray paint. So off to the store to buy more silver to hand paint on.
THEN I saw some super silver glitter paint, so I bought that instead of plain silver and painted that over original silver background.
Tired yet? THEN I did a 2nd coat of silver glitter paint, followed by 2 coats of paint on lacquer. DONE and off to the fair.