For each picture on the storyboard (or point in the outline) provide MORE detail. Instead of just "Visité a mi hermano en Alaska," you could write, "Visité a mi hermano Paul. Paul vive en Alaska. Su casa es muy vieja y primitiva. Le falta electricidad y agua corriente. Yo dormía en un cuarto que no tenia una cama ni alfombra."
You should focus on communicating to your reader. Right now, your goal is clear communication of your main ideas, and a good level of detail If you can, have someone else read through your story, without explaining anything to them. If they are confused, you should find out what information was missing, and fix your rough draft so that it is easier to understand.
You need your rough draft ready to be edited by the beginning of class on Monday. If you have problems, or are feeling frustrated or stuck, call me or email me.