I bought Covergirl's Outlast lip stain a month or so ago and I officially love it.
The first time, I drew it straight on like I was using a marker and I looked like a clown for hours. It comes out dark. I have shade 440, wild berry wink, and I actually love the color, but the saturation was a bit much.
I have the hang of it now. Dot it on lightly, using the very tip of the marker. Rub in each dot immediately, because it dries almost instantly. Very lightly outline your lips, doing just a tiny area at one time and blending toward the center as you go.
Bonus - I use it on my cheeks if I'm feeling lazy. Same deal, just add one dot at a time and blend it immediately. It looks nice and sheer and adds beautiful color.