So I gathered a few research images, including some of my own tree photographs (particularly those taken in Norway), and set about drawing trees this afternoon.
And here's a sneaky peak at the current Illustrator document. Still working on the placement of the type, but I've cunningly devised a wrap around for the title and blurb so that when you take it off the yellow eyes are hiding underneath.
I might even print it out at uni tomorrow and see how it looks folded. But anyway, not bad for an afternoon/evenings work.