To get your drawing, hit 'Send' when it's finished, scroll down to the generated image, and copy/paste it. Enjoy!
(I have to be honest, this isn't exactly an oekaki board. It is, however, an oekaki-style drawing program done in HTML5.
You can get the Javascript, CSS, and HTML file you need to host it yourself
here, called 'neo' inside the 'dist' folder.)