I tend to the be girl who buys too much eyeshadow. I wish I wasn't like this, but I also do not know how to apply eyeshadow well.
After many years of asking for the perfect eyeshadow, I came across the perfect ones - Chanel Quadra Eyeshadow! I had the makeup artist apply the shadow to show me how to apply, then I wore it all day before buying it - just to make sure it lived up to it's status.
I researched and found a few links to help with applying the shadows.