Single-stage paints are recommended for basic colours such as red, blue, or yellow. They dry to a glossy finish and are easy to prepare, so are perfect for the novice painter. Note, however, that these are rarely used to coat an entire car. [3] X Research source

A two-stage method tends to yield a more metallic finish. If this, along with greater protection, appeals to you, then opt for a compound coat.

If the technical data specifies the use of paint thinner and/or paint hardener, these will need to be purchased as well. In the unlikely event that this information is not printed on the can, go to the manufacturer’s website or contact the retail outlet where the paint was bought. [7] X Research source

The paint itself will determine the colour of your mixture. ‘Reducer’ or ’thinner’ serves to dilute the paint, avoiding solid clumps or “orange peels” in your coat. ‘Hardener’ will help your paint dry for a convenient finish. [8] X Research source

If you are using a paint mixing cup there will be fractions which correspond to this ratio. So, you might fill the cup with paint to the ‘8’ level, use thinner to reach ‘9,’ and top it up to ‘10’ with hardener. [10] X Research source

Whatever you use to mix the paint with will be ruined, so choose something that will not be missed.

If the paint is not flowing well from the spray gun, add more thinner to increase the flow. If having sprayed the surface you see that the paint is running, or is having trouble drying, this is an indication that more hardener is required. [12] X Research source

Base coat paint will be paired with reducer or thinner to ensure the best viscosity. Clear coat paint must be combined with hardener before being applied to your car’s surface. [13] X Research source

The ratio of base coat paint to reducer will always be 1/1. Your container, preferably a mixing pail, should therefore be half paint and half thinner. Your clear coat will be slightly more complicated. Depending on the brand, the ratio of clear coat paint to hardener will usually be either 4/1 or 2/1. [14] X Research source