Accidents happen. And sometimes they can be the key to great creativity. Take this photo for instance. Completely unintentional; totally accidental. A mistake. A failure.
And yet it is uniquely beautiful in its simplicity and its awkward composition. Sometimes the greatest works of art come from accidents. I spill a bucket of paint on my canvas; it turns into an abstract. I make a mistake in a sketch; the line moves the drawing into a new direction, turning into something new and wonderful. An actor forgets a line creating an awkward hesitation, changing the scene into something uncomfortable and tense.
These kinds of accidents can be seen as failures. Or they can be taken as opportunities to try something new, take the meaning of something in a different direction. Run with it. Don't be afraid. Uncertainty can be a guiding light.