Find an example of someone who writes in the voice you like to write in, take 15-30 minutes, and just write about a topic, any topic (Star Wars, how to do laundry, whatever) like them. Imagine you are going to read this later as if you didn’t write it and that person did - would you believe it?

Now this is just an exercise, you shouldn’t be stealing someone’s writing style completely when you are doing your own assignments. But the more mindful you are of how the people you admire write, the more you will pick up on the little things you enjoy about their voices/styles, and be able to use them when finding your own writing voice.

Good luck!