I was supposed to post this two days ago ... but real life got in the way of finishing it up. So a quick sketch it will remain.
I had to remind myself halfway through that I'm trying to loosen up in my drawings! So the delicate structure I set up to start off with became a mass of sketchy lines instead. I'm quite pleased with the results, unfinished though it might look. Well, that's probably because it is .... not quite done. Here's the final scan and a couple of images of what I did to get there:
Drawn in my large moleskine journal with an assortment of coloured pencils. Cheers.