It's usually write how the scholarship would benefit you mention your skills and achievements n stuff but what most people would tell you is you gotta use words you dont usually use when you talk to people words like those lawyers, poloticians and novel writers use to write their books words like those you get on the vocabulary part of A rated SAT tests uthese kinda words make it look professional like instead of i love biochemistry or my biochemistry is my dream field maybe say like am ambitious about bio chemistry mnamn n check your grammar multiple times before submitting