Hello Guest 'Like going from crayons to perfume' would be a simile, unfortunately, not a metaphor. It would be a very strange simile, moreover, as it's difficult to imagine a process that involved crayons at one end, and perfume at the other; unless you were thinking of 'crayons' = 'child at nursery school' and 'perfume' = 'sophisticated adolescent female'. However, that doesn't mean you couldn't use the phrase.
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