Choosing between acrylic, enamel, and lacquer depends on your project and setup.

• Acrylic (water‑based): Low odor, quick dry, and easy soap‑and‑water cleanup. Suitable for brush or airbrush. Often benefits from a primer and a protective topcoat for durability.
• Enamel (oil‑based): Levels smoothly and cures harder, with longer dry times and stronger odor. Cleanup uses mineral spirits or a compatible thinner.
• Lacquer (solvent‑based): Fastest drying and very durable, with stronger fumes. Typically sprayed with good ventilation and a plastic‑safe formula.

Check each label for plastic compatibility, thinning, and cleanup details, since formulas vary. On Walmart.com, you can narrow options by paint type, finish, or set size, and choose pickup or delivery where available.

Primer helps paint grip plastic and evens out color, especially under light shades or metallics.

1. Prep: Wash parts with mild soap, rinse, and let dry. Lightly scuff glossy areas with fine abrasive if needed.
2. Choose primer: Use a plastic‑compatible primer (color matters—gray is versatile; white brightens; black deepens tones).
3. Apply thin coats: Spray or brush in light passes, letting each coat dry per the label.
4. Inspect: Sand nibs lightly and re‑prime thinly if needed.

Priming is especially helpful before airbrushing, for high‑wear spots, and on mixed materials. Good ventilation is advisable, and results can vary based on temperature, humidity, and the specific product used.

Thinning and cleanup vary by paint type, so start with the label.

• Water‑based acrylics: Thin with water or a compatible thinner in small increments. For brushing, aim for smooth flow; for airbrushing, a skim‑milk consistency is a common starting point.
• Enamels and lacquers: Use the matching thinner from the same chemistry. Avoid hardware solvents not specified for hobby paints.
• Cleanup: Water and mild soap for acrylics; mineral spirits or dedicated cleaners for enamels; specialized cleaners for airbrushes.
• Safety: Work in a ventilated area, keep away from flames, wear appropriate protection, and dispose of waste per local guidance.

Test ratios on scrap and mix only what you need. Small tools like pipettes and strainers can help with consistency, but techniques may vary by product.

Both approaches can look great—pick based on the finish you want and your tools.

• Brush painting: Thin paint slightly for smoother flow, use soft brushes, and build up multiple thin coats. A wet palette can help water‑based acrylics stay workable. Minimize brush strokes by loading the brush properly and working in small sections.
• Airbrushing: Strain and thin paint to spray smoothly, start at lower air pressure, and apply light passes for even coverage. Mask gently to protect details and clean the airbrush between colors to help prevent clogs.

Practice on scrap to dial in consistency and pressure. If you’re shopping, you can filter for brush‑ready or airbrush‑ready paints and choose store pickup or delivery where available.

Clear coats and surface prep can help decals and weathering look more realistic.

1. Gloss coat before decals: A smooth surface supports adhesion and can reduce silvering.
2. Apply decals with care: Use water and, optionally, decal solutions as directed. Let them dry fully.
3. Panel lines and washes: Apply over a glossy or satin surface to improve flow and cleanup.
4. Seal the finish: Choose matte, satin, or gloss clear coats to match your desired look.

Allow adequate cure time between layers and test on a hidden spot first. You’ll find clear coats and weathering products in this category; pickup and delivery options may vary by location.