Spray perfume on your skin right after you come out of the shower when your skin is still damp [on the neck, wrists and any pulse area]. It helps lock in the scent. Or, if you don't mind spraying any in your hair, that works as well. Put some in your lotion..
Or, you can spray on the back of your knees, so people smell it when you walk by. Although, the scent would probably go away faster... Just keep spraying yourself when you think the scent is dying down, on places where you haven't sprayed yet. This will work, trust me :] Hope I helped, and sorry if I didn't! ♥