Entitled "Devotion", this was one of my more complex "skin" pieces. This lady had a ton of lovely wrinkles.
8X10 done entirely with a scalpel #11 blade, chosen for it's very fine tip therefore very fine scratches. I use a narrower form of crosshatching in multiple layers with a variation of long and short strokes sometimes with re-inking (diluted) in between layers. I usually start out with fairly long very light (pressure) strokes...the more layers, the shorter and finer the scratches.
Although it might sound a terrible thing to say, doing m'lady reminded me of doing my elephant piece a couple of years back there were that many similarities...I pretty much tackled doing her skin in much the same manner I did the elephant hide.
16X20 done with an xacto #11 blade