Before posting make sure your image is not too large. I use approx 900x700 jpeg file and know where your image is stored on your computer.
To post your image on iHub Click the [Tools] Tab and select [More Tools] then choose [My Image Gallery] Click {Choose File) and a box will open of your computer files. Find where your file is located and select it.
Then click [Upload] and a link will appear on the right side in My Pictures section. Highlight and copy the Embed Link. Then Paste link into your message box.
I hope this works for you. I'm anxious to see your post.