Explanation: Choose a picture and start plotting
Choose the picture that inspires you or gives you an idea. Create a character. (they can be based on someone you know, but I suggest someone less known if you do) Make a setting, describe the weather and landscape; and even if it doesn't go into your story it would help with planning. Find a moral. A short (G rated) storyline, about kindness or something that just brings a smile to your face.
(I would write a short story as an idea for you, but 1 its supposed to be your creative writing, not Megan's dark depiction of this sad earth. my friends know how dark and messed up my stories get.)
If this isnt helpful please let me know!