So by now you should have a fair idea of where your play is going...but how about how to write it? There are many different styles to play writing, but we're just going to explore one.
Click on the link below. It will show you and example of a play script called, "Sherlock Holmes" by Sir Arthus Conan Doyle and William Gillette. Your task is to read through part of the script, about a page is fine, and make notes on how it is set out. For example, look at how it sets out the dialogue, the stage directions and the title.
https://www.diogenes-club.com/sherlockplay1.htm