Lines or no Lines?

I forgot to save Jennifer Hawkins as a JPEG so I cant show you what I did :(

When I was doing some research, I found this picture:
I thought it was really odd and interesting. I considred using this on my Avatar, but it looked really weird when I tried it out. I didnt know what the red stuff was. I thought it was like string or something, but I dunno, its really weird.