Don't think it matters but, I always move my coil over the airhole. In a few pics I moved it back to show the relationship of the whole pic and to get a bit of depth of possible.
Spread the wick out so the walls of the tank hold the wick up.
Cotton is a pita sometimes as when wet it gets limp....
what?
If you have no ecowool and aren't eating granola chained to a tree lol, I can happily send you some 2mm. It is my favorite although I am using cotton in a couple Spheroids now. And GP fluff if needed.
I'm good on fluff, ordered 2 with the spheroid. I'll rebuild my coil in the morning (for less ohms) and change the direction of it. Trial and error.. I'm learning. Not against ecowool (OK farmers), but I want to make the cotton work. Really it is working, just tight draw.