When My Big Sister Lies [SHORT FILM]

A short film inspired by Metlifes "My Dad Is A Liar". The heart warming story of a big sister who cares for her younger sibling but does not know until she receives a letter written from her younger sister, that her little sister knows a lot more than she thinks she knows.... With music by Craig Armstrong from the romantic comedy "Love Actually".
I was pretty much a beginner at film making and made this when I was 13. I do not use any other equipment other than my Nikon Coolpix L840 so the sound quality isn't to great, if you have any film making tips or other software I could use to improve my film making I would apreciate if you could write them in the comments below thankyouuu! I really liked the MetLife commercial and thought it would be an easy storyline to make into my own for practise, its about the camera angles, lighting and music I have fitted into it.