multiply lighter coats are better than one heavy coat of paint, IMO.
use small brushes, and paint from light colors to dark.
then you can cover a light mistake with a dark color.
for really small areas some times a Sharpie works better than paint.
any over paint on the base you can cover with paint, or Sharpie.
patience is the best advice, take it slow and pay attention to detail.
G00d luck
