Questions regarding digitals

When doing digitals, should I do my hair, leave as is? Get a haircut, use any makeup to cover little blemishes? What are some good things modeling agencies look for? What do "good" digitals always have?

Super interested in getting into modeling, wanna shoot some digitals. Literally all I know is shoot some digitals and send them into an agency. If there's anything else I should be doing to start a modeling career please advise me because as far as I'm aware that's all I have to do for now.