There are a couple of ways to incorporate pictures in your posts on NAT.

 One is to attach the picture to the bottom of your posts. That's what you've been doing. This will not allow you to put text between your pics.

 The other way is to embed images that are hosted on another website. This will allow you to place text between them.

 Instructions on how to do both can be found here....http://agtalkplus.com/?q=node/2943