I can't fin what the lemon eyesahdow looks like by Estee Lauder, so I'm going to go by what I know of other lemon yellow eyeshadows.
The yellow shadow actually goes on the lid and in the very inside of the arch. Then the apricot would cover the rest of the arch - being sure to blend very well where the yellow and apricot meet. For a night look use a black eyeliner and heavy black mascara to really make it pop.
I would only use this in the daytime if you have the skintone to pull it off - middle easter, latina, very tan. Use brown eyeliner and keep the touch light with the colors.
Have fun with it!