The image for the heading
... has been created using gimp. The original is this:
Mainly I used paths, a very powerful tool inside gimp:
It is the tool which looks like a fountain pen with the anchor points for the curves. While keeping strg pressed you can manipulate the curve as to your needs.
"Goanna/ Lace Monitor/ Lace Goanna at Halse Lodge"
is by brewbooks on flickr and licenced