Welcome aga!  This flower shot is very nice. You can edit your story, and type a name for your shot in the text box.  Then highlight the name, and click on the 'picture icon' on the far right of the toolbar above your text.  A window will open with your pictures in it, click on the one you want to link to the highlighted text.  Save your story, and now your story will have a pop-up link to the picture.  And the system will only allow one story to be published per day, but you can put several pictures in the one story.

I hope you'll continue posting photos - looks like you have some nice work.