Some of the functionality with adjusting the formatting of embedded images detailed above won't work for you. Not without a little adjustment on your part – a software patch if you will. My apologies. You need to turn these features on for your profile.
Click on the Settings link (top of page, where you logged in).

Then, in the L-sidebar, select General Settings

On your My Settings page scroll down until, near the bottom, you get to Miscellaneous Options.

Click on Enhanced Interface – Full WYSIWYG Editing.
The full menu of image placement options will now be at your disposal.
Sorry for the inconvenience to your time.
Click on the Settings link (top of page, where you logged in).
Then, in the L-sidebar, select General Settings
On your My Settings page scroll down until, near the bottom, you get to Miscellaneous Options.
Click on Enhanced Interface – Full WYSIWYG Editing.
The full menu of image placement options will now be at your disposal.
Sorry for the inconvenience to your time.