Sorry for the bad scan quality, i did the best i could with them.
These are my quick thumbnails so far (there is more, i just need to adjust them and such). I did have a problem at the start as i quickly ran out of ideas for quick sketches. In my head at the time was images for my final pieces, and drawing them quickly was difficult. I could see exactly what i wanted in my head, but couldn't really put it down on paper very well. So i broke them down into small chunks and did these drawings. Getting rock to look like rock quickly was hard. I'm going to try and do some perspective ones next.