Welcome to the site !!
What you need to do to get a picture to show up is to use a Hosting Site , like IMGUR or Photobucket (Photobucket makes you pay $300+ to post images , but IMGUR is free ) , you Upload your picture to it and it will give you links to use , if for example you use IMGUR , then it will show links to the right , choose the one that say Forums and Message Boards and Copy the link , then simply paste it in your post , it will look like this in your post
[img]https:/ /i.imgur.com/U8Ew1j3.jpg[/img] , but show up when you post it or Preview it , like this (below) , then we can figure out what you are needing easier and it may help others with the same issue if a picture is posted here rather than swapping emails back and forth ....