I’m not sure about the most “easy” way to write this essay, but I’ve been told by mentors that it should be less technical and more about what you did and why, what you learned, and what you experienced. Abstracts don’t necessarily demonstrate ownership of projects since abstracts are not written as personal narratives. I’m not sure abstracts would help committees learn about how you think and have grown as a scientist. This is just my opinion, if you think it’s your best bet then go for it.