I concentrated less on the artwork and more on the technique in this test run.  I wanted to see if I could create the same effect digitally that one can create using a water soluble pen and a water brush.  Turns out you can, but it takes some finessing and copying the pen strokes on a new layer so that you can maintain the pen strokes on one layer and make them bleed with water on the other layer.  Next step is to concentrate on the artwork and cross hatching and mark making and then try the technique. I like using a blue black ink color, but you could use any color you like and just stick to one or two colors in the artwork.