"Juno Is Not Here" Script Feedback

Hi! I am a student screenwriter who's just recently begun writing structured screenplays and stories. I would love to get into selling scripts eventually, but I'm not really sure exactly where to start. I have a script posted on here called 'Juno Is Not Here' and I would love to get some feedback on it from anyone willing to read it and let me know what's good about it, what it may need, or maybe how I could start marketing it! 

Here's a short synopsis to familiarize yourself: 

Juno Calder is a 17-year-old girl who embarks on a cross-country train trip to run away from her tumultuous family life and the trivialities of small-town boredom – and into the wonderful, idealistic and shiny life that California promises. In the space between train stations, she finds pieces of herself in songs, strangers, and the excitement of a whole country she’s never really seen. 

Here's the script link: https://www.scriptrevolution.com/scripts/juno-is-not-here

Thank you all so much!