How do I make my draft for the 'University Application Checklist' guide sound more professional and less like a random list?

I'm a first-year Communications major and this is my first real college writing project. I have to write a step-by-step guide for high schoolers on their application checklist by next Friday, but my draft just feels like a bunch of bullet points. I tried reading some blogs for inspiration, but I don't know how to transition between the sections. Should I add a long introduction or just rewrite the list into full paragraphs to get a better grade?