I need advice writing a literature review about DJs?

Introduction
2 - 3 Arguments in support
2 - 3 Arguments against
Conclusion

That^ is a pretty standard structure for most of the papers you will ever write in school.

You don't need a subheading for the introduction, but you do for the others, including the conclusion, which you can also call upshot or takeaways if you prefer.

If your argument is something like DJ are musicians because they handle music and change it, you can write a heading something like:

DJs Show Musicianship through Altering Standard CDs

Now you try it.