How to ruin a sketchbook in one easy lesson

Whilst at the show I admitted to Sue, one of my new teachers that I hadn't done an awful lot of preparatory work for the first of the workshops which I will be attending next week. Despite my trip to Vienna, I had done very little art work unless you allowed for the Opie-isation of myself and my beloved. She gave me a few pointers to get me started on my sketchbook:

• don't start at the beginning.
• make a place for my sketchbook and just do a little at a time with whatever drawing implement (pencil, pen, charcoal etc.) each time I passed.
• get some background already painted on those pristine white pages.
  

Whilst those words of wisdom were still fresh in my mind, I stole myself away into my cavern and spent no more than hour (or it possibly was only half) and rustled up the following:

12 paint brushes / foam brushes

12 pots of mixed up Brusho

One unsullied, untouched, pristine sketchbook

I then set about sploshing (yes that it is a technical term) on the pages:
washing, scrubbing, hatching etc. turning each page as it was covered. I then closed it up and let it dry (as I had been generous it has taken a while), unworried about colours merging or my sketchbook being perfect or beautiful:

Now that it has "cured" I now have a "ruined" sketchbook I no longer feel precious about. Have now got some lovely backgrounds to add to: