Some small advices if you don't know how to do it :
- Avoid to write the direct links to pictures that you find on the internet. Save them on your computer !
- Go to the website hosting of pictures, like ImageShack.
- You can choose pictures that you want to post, clicking on "Parcourir..." then on "Host it!". Copy one on codes which there are in your message.
If you have a trouble, don't hesitate to ask, here or by a private message !