It all depends on make and style of the hoisery,i don't suffer from what many ppl here do,that is being tight on the nose as i have had a lot of practice over the years.I do get pressure on the forehead after a while,but some makes of hoisery are worse than others,as to the amount of layers i go up to it all depends on the look i want.
8 is the max normal,11 with 3 layers being condoms when i did breath play but up to 6 is the usual amount 2 being part of the encasement with 4 being added later either stockings or knee high.

Just to add an extra diamension to this thread,when i layer my head i must have it pulled right to the toe,how many others do the same.