basically, fully clean car, get a colour matched tin of spray
get a lint free cloth, rol it/twist it up so uv a nice thick corner, soak it in spray, wipe it across scratch dnt be sparse, let it dry, if the scratch is depe or stoenchip is deep buil it up, i used to dap the paint soaked cloth on stonechips! polish off with autoG super resin but polish the oppsitie way to scratch/chip i.e if the scratch is vertical then polish horizontal
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, (hard work bit) do a couple of tiems depending how anal you are with cleaning..... even light scratches just wipe across one, dry.. polish off and you wont eb able to see it!
lets put it this way i had 3 days off work... i spent all 3 cleaning detailing de-scratching and stonechipping, also had a nasty key mark in the rear quarter which was veryyyy deep, neways 3 days later looked liek valeted showroom condition!!
i couldnt tell u what make of paint it is as i use a professional paint shop to mix it forme....! but dont use halfords or cheap stuff autoglymm will just pul it straight back off its not hard enuff to withstand the abrasion