Here's what you need:
1. Pick a fruit
2. After choosing your fruit, smash it in a small bowl and drain the juice into another bowl, so there is no seeds and only liquid.
3. For Lips: Moisturize your lips 10-20 minutes before applying your stain (for smoother lips, try a lip scrub as well before moisturizing). If you apply the stain too soon after putting on chapstick, the stain won't stay on your lips. After 10-20 minutes, apply one thin layer of the fruit/berry juice for a "base." After it has dried completely, apply more on your lips, rub your lips, and let it dry.
4. For Cheeks: Dot a generous amount of juice on the cheek, but not too much to the point where it's dripping. Spread the juice on the cheek, but not too spread out, just in the small general area (don't rub in yet! You'll be spreading it around later). Let the juice sit for 20-30 seconds (depending how bright you want the color.) After the time is up, the juice should feel a tad bit thicker This will make it easier to rub in..Rub the juice into your cheek in the area you want it, until you have the flush you want. Let dry, and you're good to go!
I hope this was helpful!