Uk visitor visa docs

Hey there i’m 22M from india i’m graduated and working in my father business firm which got gst license and all
So I’m trying to visit uk in month of august to attend my cousin’s graduation ceremony and I’m planning to go on a vacation for 14days to visit london and other cities
My father will be sponsoring all my trip expenses
So what are the main docs should i consider keeping that helps my profile be stronge