Given how obsessive I got over the planning stages I decided to make a conscious effort to loosen up with the linework and colour treatment on the final piece (just a detail below) and, all things considered, I'm happy with the results... although, looking at all the sketches I'm sure I could take another crack at the tortoise, hhmmm, maybe the eagle's face too... and perhaps the tail feathers... ... enough!
I'd waffle a little more but scanning all this in took much longer than expected, I'm starving and need to go and "turn over stones" in the kitchen to find myself a meal! Pop on over to ALBB if you fancy seeing the final pic.