Hi and welcome to the Forum.
You must upload your images to an online picture host and link to the picture(s) in your post. The following should help you: How to Add Images Posting Requirements
We like http://www.tinypic.com
as a photo host. Embedded images get a far greater response than just posting links or thumbnails.
Remember to use the 'Preview' button before submitting your post - if your images don't show up there we won't be able to see them either.