Thanks for the tip! I do have PS and have used it extensively, but not that feature.
As for the picture, I didn't have good lighting available so I had to set a long shutter speed to get it bright enough. And yes, these are very fine lines. I bought the finest tip pen I could find (.02 mm Micron). There's something zen about that kind of precision.
Thanks for the compliments, guys. Really. I have a couple more in this style finished that I will be posting soon.