I've been working on a large doodle for quite some time. I've integrated into it several doodles I finished in the past. The hardest part was imagining what it looked like overall without the ability to quickly zoom out like a regular doodle. Also being forced to view a small portion of the doodle even when zoomed all the way out caused many complications. I didn't save the changes along the way since there were so many. Also the full doodle is quite large.
The thumbnail has been reduced to 600x600 pixels which is about 5 times smaller than the original created in MS Paint.
http://www.gedekran.com/doodles/DoodleLG.png - 305 KB | 3153x3153 Pixels