That very much depends on the program that you are aiming for.

Excellent letters of recommendation (2 are good, 3 are better).

Good GPA (Varies from college to college). Contact UoM to find out what's the cut-off for your desired program.

Well-penned Letter of Intent. It is crucial to justify to them and yourself why you need to be pursuing this course.

Try to score upwards of 7.5/9.0 in IELTS if you're not a native English speaker. The University has specific cut-off scores for each category (i.e., listening, writing, speaking and reading).

All the best.