I was looking for a nice cover for my notebook as an academic freshman size 8.5 x 11 so I drew my favorite swing naval fighter Tomcat. Using a Rotring Technical Pen 0.1 and 0.5 tips. In the old days, tech pens need cleaning and need care to write it nicely. Current tech pen are disposable type. No blots and no worries should one drop his/her pen.
Enjoy writing and sketching.