I like to try it with one or two sprays (depending on the type of fragrance and the brand; some I have enough experience with to know if they’re weaker/stronger) before going heavier. I like to spray on my forearms and see how I like the scent before spraying more freely (it’s easier for me to ignore a scent I don’t like if it’s not all over me!).
I consult with my husband to see how much sillage it has, too. I’ll check the scent throughout the day, every few hours, to see how it has transitioned and how it has weakened over time. I haven’t had issues with fragrances really changing on me after multiple wears or based on temperatures, so I don’t need to wear it more than a few times to know if I like the actual scent or not!