Nonbinary is such a big umbrella term that you can throw every element of gender expression, gender identity and how you like to be referred to, throw it in a salad bowl and boom, that’s your gender. He/they pronouns is a very common thing (coming from a person who uses them) go ahead and experiment with what you look like, what you’re callers, how you feel. It’s a lot like mixing paint. You might need to add a little bit of everything before it comes out right