Not much of a techie. I don't know how much you know about putting a picture on. You need an URL to the picture and click on the yellow box with the mountain and sun on it.
You can also put on attachments if you have pictures on your computer. You have to reply or start a new thread, you can't put attachments on Quick Replies.
http://www.animated-gifs.eu/meteo-christmas/0012.gif