there are as many different ways to wear eyeshadow as there are people!
no one way is right or wrong.
some people simply like a sweep of one colour on their lids, others do two and still others - ME for example - habitually wear three or more.
i don't wear white on my lids very often, usually cream or peach. sometimes i'll finish by lining with a dark brown and then sweeping the same dark brown in the crease - using a crease brush (MAC 224 - but you can buy similar brushes at the craft store for much less). finish with mascara and go.
other times, i'll carefully layer on colours.
Clinique has their "All About Eyes" clinics several times a year and they teach skin care in the delicate eye area in addition to makeup techniques. these are free, though it is a good idea to buy something. these clinics are usually held at a Clinique "bonus" time too!
you can find out when these are held by going to the HBC website and getting event information for your local store.
and then there's always Sephora now that they're open in the Eaton Centre. makeup applications are ALWAYS FREE and if you go early or on a not-busy day - like Monday - and just want an eye makeup lesson, someone will be able to help you!