Supplies: Wood-Grain Contact paper (found at most dollar stores), x-acto knife, scissors, tracing paper.
So, to start, go ahead and power off your laptop and take out the battery so you're free to work on it without any worries. If you have all sorts of junk on yours, like I had on mine, you can scrape it off and use a little adhesive remover to get it nice and clean again.
Now, you can decide what you'd like to do about the logo on your cover. I decided I wanted mine to outline it, so I used a piece of tracing paper to trace the outline, then laid it over the contact paper in the middle, and cut out using a x-acto knife (I used a little piece of tape to keep it in place while I cut it out). You could also just cut a large round window for it and use a bottle cap or anything that's nice and round.