Rocket injector testing project

Hey! So I’m currently a mechanical engineer student and I’m trying to work on a project to put onto my resume. I got inspired by some YouTube videos today so I machined this mockup injector along with a test bench of sorts. This setup is only for a garden hose currently but I’d like to step up the pressure eventually. How can I turn this into a project that can eventually land on my resume? Ideally I’d love to put some gas in this and see how that goes (hopefully my creation doesn’t explode) but I know that still a ways away. I’d kiss you on the mouth for some ideas.