Here are the resources i use for making keypress overlays in my tutorial
it is made as simple clips with different key size combination, just cut and paste the clips for the needed keys into you project and change the text in the text: simple filters.
https://drive.google.com/drive/folders/1_zTj6FZ7VsAu1CDygEnniqZuVgtrCz9n?usp=sharing
Released under the CC0 License