You can use the Truth is Beauty Home Draping Cards to figure out which color season is the most flattering to your skin.

I(f you'd like a little more background on the concept of seasonal color palettes, see here.)

1. Pull your hair back and remove all makeup. Then find some natural light and a mirror. 

2. Look at yourself or photograph yourself with one season's card under your chin. 

The right colors will make your skin tone look even and healthy. You may seem to have a hint of color in your cheeks and lips. Discoloration, lines, blemishes and shadows will seem subtly reduced.

The wrong colors can have a variety of unpleasant effects on your skin. 
Some common effects:
 - Uniformly ashen or greyed skin. This might mean the colors are too cool.
 - Uniformly pale skin. This might mean the colors are too dark, too saturated, or too cool.
 - Uniformly yellowish or orangeish skin, or skin that looks muddy or dirty. This might mean the colors are too warm.
 - Features that seem less defined or less sharp. This might mean the colors are too soft or too saturated.
 - Blotchiness or redness in the skin. This might mean the colors are too soft or too light.
 - Shadows in the skin or an overall dullness. This might mean the colors are too light, too dark, or too soft.
 - In any wrong season, your skin can appear more shadowed, more lined, and more discolored.
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Don't get too caught up, though, in trying to figure out why a season doesn't work. Everyone is different, so people of the same season may see different effects with the wrong colors. Use the effects above just as a guideline.

3. If you have more than one card, switch back and forth between two seasons. Keep your eyes focused on the center of your face, not on the colors themselves. As you switch between sets of cards, you'll see subtle changes in how healthy your skin appears; this is how to determine which of two seasons is better for you. 

I strongly recommend taking pictures of yourself with the cards and then flipping through the pics somewhat quickly on your screen while keeping your eyes focused on your face. You should see an obvious difference in the appearance of your skin as you flip from picture to picture.

 :-)