Welcome to indietalk, sunil.
The industry standard is Final Draft. I prefer Movie Magic Screenwriting.
A good cloud based software is Celtx. I have heard good things about
Trelby - and it's free - but never tried it. Another free one is Highlander 2.
Very basic and good for a beginner.
You would start by describing the action that will be seen.
Then write that the camera moves to show everything was reflected in a mirror.
I'm having a difficult time advising on how that will show the character's mood.
Why don't you write it out how you see it and then I can get a better...
You know the screenwriter shouldn't use camera or shot terms
in a screenplay. You only write what can be seen so the character's
mood should be something they do – an action.
The character is looking into a mirror. What does the character
do to show their mood? What does the character do as...
You have a story. I don't think you need any help there.
Are you looking for someone to write the script for you? Why don't
you want to write it yourself?
I suggest you wait a while before you buy a camera. Write your script
first, then do a lot of rewriting; get it the very best you can. Once...