how can i write a proposal ???

[لؤلؤة*]

slam to every one
what i am asking about it mentioned above
im so confused i donno how can i write a proposal even how can i pick a topic fit this proposal
so plz if u dont mind
dose any one did it before ?or can i take a look just to know the basics techneqz im gonna be thankfull

note: im medicine this is not my account