What's more interesting than red and more sophisticated than pink, rich purple lip colors in variations of berry, plum and aubergine are not only seasonally appropriate and currently trending, but are also flattering on any skin tone.

Always exfoliate and moisturize beforehand. Flakes and dryness are more apparent with darker colors.
Use a lip liner first and then apply the color with a brush to ensure a perfect application. Any mistakes will be obvious.

Keep the rest of the face minimal. Though if your lip color is matte, you can get away with a metallic (but neutral!) shadow or liner.

Don’t skip the blush. A subtle, rosy color will soften the look and warm up the face, but won’t compete with the lip.