I'd like to post a pic of Breck as taken from Keystone's Outback two days ago.

I don't think you can do it that way.  You have to upload the pic to the web then paste the link to the pic using the tool bar above.

 You have to find an online host site for your pictures. I don't use Picasa, but it is one example: download Picasa for your computer, put all photos in there and use different albums for organization. Hit sync with Web and everything's uploaded. You can also set the quality to upload (doesn't effect the actual local file) to something much lower res in order to get it done on a low bandwidth connection. Then you just go to the picasaweb website, find the picture, right click, copy image address, click the Img tag, paste in the middle and you're done.  Not to mention you can then have access to all your pics, sorted by day on your phone/tablet or any computer.