**Some key points to keep in mind when painting a patina look**
FIRST: Do NOT ever try your first time on the vehicle, Try on a "let down" panel first, which is a junk part that will not matter if you mess up.
AND MAKE SURE YOUR PAINT IS DRY BEFORE SANDING or the paint will ball up and create problems.
SECOND: Always make sure you remember that weather/UV are the biggest contributor(s) to the patina look. So when you develop your layers to make it appear that paint has been taken off over the years make sure to keep in mind that the sides of the truck will always have more of the regular paint color than the top areas that have been beaten up by the weather/UV.
THIRD: When sanding, concentrate on areas that water would gather and create a rust look when dripping down those body lines.
FOURTH: Always try to keep natural colors (rusts, aquas, browns, yellows, black) as they would normally exist on an older vehicle. Unless the body color of your vehicle is something crazy different, then go with your color scheme with each layer.
FIFTH: Always stay far enough away from the surface that you know for certain you will not run the paint (creates problems) and its ok to dry spray this process a little as you will be lightly sanding the paint layers anyways. When fully dry of course. Light coats are highly recommended so you do not have much to sand off and then waste sandpaper.
SIXTH: Your final base coat color will be the last layer you apply to then lightly sand off to the other layers. Your intermediate layers can be as you would like to see them in order, maybe rust color first, Then some touches of yellow/ brown and then finish it off with your satin lagoon (Aqua)
SEVENTH: Sand off as much or as little as you'd like. All Paints fade differently so what may look like a mistake to you may be a really cool detail that others see. Its your canvas so make it your own!
PRACTICE FIRST!