Clean the metal first, then spray. You'll probably need more coats than wood (around nine or so). Just make sure you use a lacquer made specifically for metal.
It is best not to mix unrelated products. Mixing most lacquers with most kinds of paints doesn't usually work well, unless the product manufacturer states that it can be done....
Be super gentle! Brass plating is really delicate. The best thing you can do is a natural all-purpose cleaner and buff it slowly and carefully with with a microfiber cloth....
No. It will damage them. Wax dipped flowers also should be hung to dry upside down as this retains the petal shape. They will last for about 4-6 months, and...
Too much fluid, gun too far from surface, not enough air pressure, add more thinner. Use as many test panels as required to get the gun spraying a nice, thin...
Sunlight and flashlight reproduce all colors. Fluorescent lamps depend on the lamp. If you use a lamp for photography, it has a higher CRI (Color Rendering Index) and all colors...