Question about type of paint for car exterior.

[Tanuki]

My 2009 Toyota Corolla has >290k miles on it. It's still getting the job done, and I'm hoping to hold out on replacing it until 1) car prices stabilize and 2) we are a little farther down the road in terms of EV technology and public charging infrastructure. In the meantime, the exterior paint has lots of areas where it is faded and crappy looking. It has crossed my mind to use it as a "canvas" for a cheerful self-inflicted paint job, with flowers, birds, butterflies, etc. covering up the sorry looking areas. Do any of you have suggestions on what kind of paint I should use? Do I need a primer? Is this a bad idea, and would it attract the wrong kind of attention?
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