Here we go my build and wicking method with cotton balls.... get a piece of cotton. Size dosent matter but thickness does! Gently pull some off the ball paying attention not to grap a bunch or thick group of concentrated fibers
Will look like this under light to show no grouping of cotton.
Next is to carefully spread the fibers or strech the cotton so its even thinner
When its thin fold the cotton over itself and prep to go through coil(s)
Then thread through the coil. This step is what gives most peeps probs, tug carefully back and forth through the coil till it slides through uniformly(sp).
Trim cotton accordingly to your dripper(will see my sryle in final pic)
Make sure coil is low/ high enough to promote airflow under and over coil. Notice with cotton installed and juiced how ya can see light through dual coil setup

note there is more gap in person, pics suck
Last juice her up that looks like this
I know the way mine is built is not average 3 post build I know. I build my coil configuration like this because I vape low nic but luvs my throat hit. Have fun and hopefuly it works good for you
Note how position of coils between posts allows for maxium airflow