How can I get less paint to come out of a spray paint can?

I want to get less paint to spray out so that I can paint smaller areas. Should I buy smaller nozzles? If so, where can I find them?How can I get less paint to come out of a spray paint can?
you can get the right spray straw for it, like you see on a wd40 can and put that around the little white nozzle in the head you push down, or you spray it lighter.How can I get less paint to come out of a spray paint can?
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