I've tried and it's damn near impossible.
He's just had lots of practise, so he's fucking brilliant at them.
This was my first attempt:

Click for bigger
As you can see, I gave up halfway through and filled it in with thick strokes.
(,
Wed 27 Feb 2008, 16:40,
archived)
He's just had lots of practise, so he's fucking brilliant at them.
This was my first attempt:

Click for bigger
As you can see, I gave up halfway through and filled it in with thick strokes.