Tell her why each boundary exists, so she knows you’re making them because you care about her wellbeing, her future and because are responsible for her.
Practice your “I’m not at all shocked at this shocking information” face and tone of voice.
Let the small stuff go. Think about your future relationship after she leaves home, you’ll want her to look back and see you guiding her through her teens, not stressing at her about dirty forks left in sinks and tiny things like that 
Say yes as much as possible, so she doesn’t just hear no all the time.
Give her opportunities to chat to you without direct eye-contact (doing your laundry, cooking together, or just side by side on a walk) and don’t talk too much - leave silences for her to come out with random things. Don’t question things, make encouraging noises, tell short snippets of how you can relate and elaborate if she seems interested. My dd is much more open with me this way, rather than me directly asking what’s happening in her life.
Let her know if you have trust between you, you’ll both get through these years together as a team. That she can come to you with anything. Remind her of this when she makes mistakes on this (she will)
Do some of the fun stuff you used to do together, when you’re both ready.
Boundaries are good for any child. You’re doing an amazing thing 