4 Pen/Ink Techniques
This is a short (around 6 min) video that really does a good job of showing you four potential pen/ink techniques to use on your Pen Project. I would suggest practicing them in your sketchbook (and look at my reference sheet).
Scroll down to the "Pen and Ink Techniques" video on the page (it's the second video, not the one with the eagle).
Click on 4 Pen/Ink Techniques to open the resource.