To get your image to pop up in your story.  Above where you type there are icons.  Click on the second to the last icon that looks like a little pic.  Wait a few seconds and your pics will show up.  Click on the one you want. You will see it come up in bold I think blue in your story.  Then click on edit and save.  Then check it out then hit publish.  You have some good shots for the challenge.

- Smile

Yep, like penny said, except you may have only one icon at the end if you are not a subscriber because the last one is the slide show icon. You must have dragged those into your story?
Also to add to Penny's comments, the pop up will occur wherever your pointer is or a selected word or phrase. Once you get the hang of it you will love it.

- So shoot already!!

I don't know, I sorta like the collage effect.

- A quack with an camera

Lots of great photos!  Great theme post.  I like the college look, also.  :o)

I like the colage look as well, but would like to see them separate so I can look at the details. I love the green plant and the banyan tree

- Walking on Sunshine

Collage is a good effect for this challange.