Get a black stocking,, that always can be the fun part
stretch the stocking over a support.
this stocking goes directly below the lens and is moved during main exposure.
Start with a 0 filter and get a good base exposure.
Then with this time start diffusion, it can be 100 % of the exposure or it could be 50% of the exposure. It all depends on your taste or how soft you want the troubling areas to be.
Then with the 5 filter give a 100% blast over top of your main.
By balancing the main with diffusion and the amount of 5 you will get, soft skin
sharp eyes, eyelashes hair ect..
You can also dodge while the diffusion is going on ,, you do have two hands, this will allow you to give more diffusion to areas you want to soften, but hold back key detail areas you want sharp.
for fun you can reverse what I just described and you will get bleeding soft blacks with sharp highlights, very beautiful for landscape with dark objects or archetecture.... you know the look I am talking about
easy peasy.
btw dpug is a great place to visit, low activitey but some pretty darn good workers on that site.