Originally Posted by ultraman6970

If you really want to mess this up use a clear coat that is not polyurethane based.

If you want to do it right, you have to put 3 or 4 coats of car polyurethane clear coat and then sand with 600 grit to get it dull, second option is to add a flat agent to the coat and will dry and cure with the effect you want.

Good luck.