High School Summer Research Tips/Suggestions

Hey guys! Current high school junior here looking for a research opportunity in the summer. I know that it is late but after getting denied by a rigorous local program I am trying my luck at local universities nearby. I am a very capable student like many of you on here (4.0, high ACT score, etc) who is looking for experience in the field of science. I truly do love science and would love to improve lab skills and work on a project in molecular or cell biology during the summer!

What are some suggestions you guys have from past experiences about emailing professors? I have already contacted some but was wondering if there was anything I should change. Does anybody have a format they found beneficial in this process? I have been sending in a resume, is this fine? Please let me know as any tips or advice is appreciated.