Ello c:
You just need to write (img) (/img) (
You have to change the ( ) into [ ] ) and btw them you have to copy and paste the website url where your picture is coming from. Like (
http://imgur.com/cOpz2us )
If your pic is not from the inet you could use imgur.com to get your image on the forum. There is also the BBCode for forums so you just need to copy it ^^
Like that one. (img)http://imgur.com/cOpz2us(/img)
I hope I could helped ya, good luck!