Once you've got the pink layer behind the girl, set the girl layer blending mode to multiply. (Do this at the top of the layer pallete).
Create a new layer above everything but the perfume bottle. Get the marquee tool and draw a rectangular selection at the top of the ad. Fill it with white. This is where your product name will go.
Come up with a perfumey sounding name. I used 'delicieux' which is french for delicious. Use whatever typeface is appealing to you. I am using Chalet.
With a little more text, this looks like a pretty nice ad. One thing that makes it pop is the bottle of perfume breaking frame with the white rectangle. This is a good technique to use as it tends to make ads pop a little more.
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