Those brown parts are what covered the leaves before they opened up, like a protective membrane. You can cut or pull it off gently if it bothers you. The plant looks as healthy as you would want, so no changed necessary.

Thank you!

Stipule ...... a normal part of the plant's morphology.

Al

Totally normal, I'd leave them be unless they REALLY bother you. They'll drop off naturally once they're dry enough.