Peaches and Cream Ecru yarn from Walmart is what I use as a flavor wick. I use 50/50 exclusively.
If starting with a stock "factory" coil head... pop off the "chimney" (center post), wash parts in hot running water, let the original two small flavor wicks just wash down the drain, but make sure they do come out. Shake, then blow the water out of the base part. Put one drop of e-juice on the wick at the coil. Hold yarn down into slots with thumb and forefinger, put one drop of e-liquid on yarn. Replace chimney post, clip yarn on both sides, re-assemble into a tank full of juice, wait a few minutes, vape.