Sorry it took so long... This is my method using Cotton Bacon v2 and a 3mm ID...
I'm using this dime for reference of the average size I use.
Then I roll this peice loosely.
Then I insert it into the coil and trim it even with the bottom of the RBA .
I fluff the tails and tuck them into the base just resting them over the wicking holes.
Then I wet the wick and shape it more over the wicking holes being sure I fully expose the coil free of cotton.
As I stated earlier, this is my method. I'm sure others have their own methods and maybe they will share also so you can find one that works for.