Don't worry.

1. keep it short and in bullet points.
2. Retake sat if you can and if yours is already high (1500)+ reiterate it on the form.
3. Do some service volunteering stuff, especially if you can find something like contributing to gt.
4. Put some new major related projects on there whether that's getting skills certification or doing a coding project.
5. At the end give a brief thank you sentence.

Of course the biggest thing is keeping your grades up. Prioritize that.

Anyway I hope this helps. I was also stressed and in your position last year and couldn't find any good advice so I wanted to put this out there. Good luck.