First things first. This

image is the button to push, to start it off. And by all means, also remember that when you press the button for images, it automatically creates an internet prefix of
http:// to the title of the image.
When you use Fotki or (presumably) another image archiving service, and copy THEIR address to paste into a link, this
http:// gets added
again and invalidates the link in the final post you do make. (It's also true when you copy the URL to this image from within this forum's own operating software.)
Claims have been made that this will be addressed in future tech tweaks here. In the meantime, remember to edit the
first http:// simply by pressing DELETE on your keyboard before pasting-in the link to your image host.