First apply GC-2434a Lamborghini Giallo Inti Perle Undercoat over Light Surface Primer even if Dark Surface Primer is the optimal for another color used to paint the same part.
Then apply GC-2434b Lamborghini Giallo Inti Perle Basecoat over the GC-2434a Lamborghini Giallo Inti Perle Undercoat once it is dry.
Paint with both paints in thin layers until color density achieved. Paint is not supposed to fix or remove imperfections on your scale model plastic surface. In other words, never spray wet coats.
We recommend using low air pressure, between 15 to 20 PSI (1,0 to 1,4 BAR) when spraying Gravity Colors paints. This is just a recommendation. Optimal pressure is unique for each user, and depends on nozzle diameter, spraying distance or velocity, among other factors.