If you're expecting a long and very technical explanation of this shot, prepare to be disappointed. I'm not quite sure I could replicate this even if I were paid to do it!
This is therefore for the mundane abstract challenge. Ahem...
Many thanks for all your comments over the last few days - I really appreciate them all and they do help!
@peadar I might have a different opinion than others in this matter, I don't know ;-) I think: what's the use of coming up with a subject and after editing it's total unrecognisable?! For me the challenge would be (but, hey, that's just me;-)) to give the subject an abstract look but still being recognisable. That would be a far bigger challenge as far as I'm concerned. i completely understand if you can't relate at all to this personal opinion of mine :-)