First of all, you can explain the main contents of your part-time job and some achievements you have made; Secondly, we can talk about what we have gained from our work. Finally, I can talk about the advantages of this part-time experience for the position I am applying for.

Freshmen seldom come into contact with the society, and there will be less things to write when writing resumes, so you can write some part-time experiences, such as selling things part-time, marketing or sales planning of enterprises, and tutoring is a practical activity of psychology and pedagogy theory, as long as it is related to the position you are applying for.