Sweet fish, had to be fun on the fly.
I posted the instructions for hosting a picture on this site without having to go through an outside source on another post. Here it is again, if you need the instructions.
To post pictures, open a dialogue box and then click on the "Host Image" icon from the toolbar above. In this dialogue box, it is the first icon on the bottom row, three to the left of the You Tube icon. Hover your mouse indicator over it to make sure it is the correct icon.
This opens a dialogue box "Upload your image". Click the "File" button, then click "Chose File". Find the picture you want in your computer and then click "Open", this takes you back to the "Upload your image" box. Click "Host It" on the bottom.
A new box will open giving you three choices. Choose the middle option "Image" and left click on the text in the image box and hit copy.
Go to the message box that you are working on, and left click your mouse where you want the picture, and hit "Paste". This will give you a bunch of code, which should be your picture. I always click on the "Preview" Button to make sure it uploaded correctly.