The finished piece is adjusted for a little more contrast and brightness than the Brushes original - didn't realise my base was too dark when I started.
Also, pardon the epileptic-fit-inducing bit at the start, where I pick my background colour. That'll teach me to keep filling new colours instead of undoing, THEN filling. If I were to undo, then fill, Brushes wouldn't keep a record of my schizoid colour-picking procedure, you see. ;)