How to edit bugreport or add attachment in Jira?

[guermantes]

I created a bug report from inside the WebGUI, but the attached image did not process correctly. I can't find a way to attach an image now to the bug report in Jira or even a manner to edit my report in Jira so as to add link to image.
???

 

[danb35]

Click the Comment button:

 

[guermantes]

Click the Comment button:

I have no button... :-(

 

[danb35]

Are you logged in?

 

[guermantes]

Are you logged in?

Oops...
Thanks!