Initial Ideas

My idea so far is to have a parallel narrative which follows a girl walking a regular journey home however, one of the clips will be realistic and normal and the other will be dream like and colourful to suggest that she is using her imagination to alter her everyday. I am unsure at this point how to display the narrative, I could either have a split screen playing at the same tame or make a menu page which chooses which narrative you watch.
I have included my initial story board: