Feedback is always a good thing right? Having your ideas tested always makes better work, and a more anxious writer too. It is always when working by yourself that your mind slips into a self-described fantasy that rationalizes all the fine details that a skilled eye will easily point out.
So, how to break out from this fantastical perspective? Get opinions of course.
Yet, what if the work isn’t quite at that point to be reviewed? Leo Burnett has published this app (for Android, I’m not sure about iPhone) called HumanKind. It uses a scale that Leo Burnett has developed which measures how effective an idea is. Now since it is only an app you have to use your discretion.
I would say to just keep the idea focused. Guidance is key, this app helps, but you’re the writer in the end. Write it the way it needs to be written – then get feedback.