I’ve finally finished the drawing of the ‘For Office Use Only’ design. It was even done on a postage envelope to match as closely as possible.

Here is a work in progress photo, which shows my stages throughout the drawing;

You can see the final version below;

Overall I am quite happy with my version, although it is not exactly the same (it would’ve been very hard to perfect it because they are both freehand) it got me into the same mind frame as Leigh and allowed me to discover the techniques in creating the design.
Not being a traditional artist, I’m surprised it came out as well as it did. It did take a lot longer than I expected but I took my time and made sure I didn’t make any mistakes as they would’ve been hard to rectify.
There are a couple of things that I was not aware of before starting the design. There is a huge amount of attention to detail, I had to use two different sizes of pens to achieve with Leigh had done with using a finer type pen to create small sized detail and a larger pen to effectively highlight the image and give it a stronger structure.

Here is a final photo to compare my version against Leigh’s.