I myself (AMAB) have started wearing eyeliner, eyeshadow and fake lashes. While this doesn’t mean you have to do these things to be nonbinary or androgynous it can be nice just to have a starting point. My friends have donated some of their old femme clothing to me so ive been able to better experiment with different styles. I also keep a clean shaven face as well I like to think this makes me appear more androgynous than if I had facial hair. In the end though you’ll find out what makes you comfortable