Basically, TER will not host or post a picture directly. Think of TER as all text and only text (for the most part).
When you insert a valid link (
http://imagesite/youraccount/picture.jpg) to a valid image file (.jpg, .png, .gif ...), TER asks that host to transfer that image to the reader. TER is just a middle man.
But here's my question. I'm Android, not Apple and I would never link a personal account anyway, but, in principle:
Take a picture with your iPhone.
Save / synch it with your Apple account (basically, to the Apple servers in the cloud, not JUST on your phone).
Then enter the link to that pic in your TER post. A lot of personal info, TOO much info, I think, 'cause the link would be something like
http://www.apple.com/useraccounts/vernjonesaccount/pictures/picture.png or where ever Apple hosts / synchs your personal data.
Ahhh ... just stick to imagecoast, imgur or similar