Here's a clearer description of how you can post a picture in the log using dropbox.com

0. Create a dropbox.com account (free). This you'll do only once .

1. Upload a picture.
2. Mouse over the line item that has your uploaded picture. You will see a Share button. Click the button.
3. This will bring up an email dialog box. At the bottom of this box you'll see Create link.
4. Click Create link and then click Copy link.
5. In your clipboard you'll have something like

https://www.dropbox.com/s/8ewkvcp9eps59b3/lee_by_shelly_resized.jpg?dl=0

6. Paste this into an editor. Add <img src= to the beginning of this and change the ?dl=0 part to ?raw=1>

You will thus have the text

<img src=https://www.dropbox.com/s/8ewkvcp9eps59b3/lee_by_shelly_resized.jpg?raw=1>

7. Paste this edited text into the log.

When the log is viewed you'll see the picture. In this example ...