In order to not be like me in term of choosing lipsticks, i present to y'all this post.
Let's say, i have more than ten lipsticks in a various colour: dark plum, nude, red, pink, terracotta, peach, etc and more than a half of it make me grumble 'what the heck i was thinking back then, this colour really doesn't suit me!!!' - yes I definitely need guide to choose the best colour for my skin tone. I did some research (no, basically i just google it) and find this, the best advice comes from Bobbi Brown:
"If I had to teach someone just one thing about lip color it would be this: Find a lipstick that looks good on your face when you are wearing absolutely no makeup."
(Bobbi Brown, "Beauty")
Happy Hunting soulmate for your lips!