Stripping all the chrome. One of the single most important steps in saving money on a paint job is to strip your Mustang as much as possible yourself. This means taking off anything and everything that won't be painted. The more you take off the less the painter has to mask around. Masking not only takes their time (which costs you money) but it also results in areas that simply can't get a full coat of paint. If you take everything off, then the painters can simply scuff and spray, which will give you better and more consistent coverage.
Fire-retardant paints do not resist fires completely but its fire-resistance formulation prevents it from fire in spreading fast.
Scuff for paint. Once your Mustang is totally stripped of exterior chrome it's time to scuff up the existing paint. The paint shop should do this also, but on the lower end paint packages they won't spend much time here. It's better for you to do it so you know it's done thoroughly.
Is some color dominating?
Masonry paints come in a wide variety of finishes, from textured to ultra-smooth. Opt for a texture if you need to disguise fine surface cracks. If you favour traditional finishes, then consider limewash, which is available from specialists such as Francesca's Lime Wash. The beauty of this paint is that it will mellow and weather with time. However, do check with the supplier first to ensure that the surface is suitable for this finish.
Congratulations! You now have everything to determine your Season. If you are Warm and Light you are a Spring. If you are Warm and Deep you are an Autumn. If you are Cool and Light you are a Summer. If you are Cool and Deep you are a Winter. Congratulations, You are One of Four Seasons.
You're not looking for perfection here, but you do want to eliminate every shiny spot of paint. When properly scuffed the paint should have a smooth, but dull matte finish.