Posting pictures

How can I post a picture in my thread?
I tried putting a picture but it just shows the URL instead of the image. What am I doing wrong?

Here we are - Thread number 559885677559.
Im going crazy with this question ...

You need 20-50 posts to unlock them.
There is no guarantee for the right amount between 20-50.

Or buy premium.

Maybe there should be a sticky thread / front page thread addressing this issue to stop the 4000 monthly threads? Just a suggestion ;p