Go to UserCP. Under Networking, choose Pictures and Albums. Select "Add Album". Enter an Album name and click "Select". Then hit "Upload Pictures". You should be able to browse your computer's files and upload directly from them. From there you can copy the pictures URL from "properties" and paste it to your post by choosing the image function from the tool bar.
The picture probably has to be in jpeg format.
Emeralds are real Gems! C. caninus and C. batesii.