Reminds me of the same scene in college as you are now. The only difference is that when I entered the propaganda department, it happened that the school was going to hold the 29th Culture and Art Festival. I worked as a stage background for the press conference, went directly to the Propaganda Department, and later became a deputy minister.
According to my judgment, I was very confused and thoughtless about painting at that time.
Personally, I suggest that your popularity is at 1. In your present form, you should make a work that can play a role in the work of the propaganda department, and let people recognize that you are qualified for this position. You said that you have some knowledge of calligraphy and painting, so these two people can fight in the propaganda department.
Pen calligraphy can introduce yourself, write more words, spend some thoughts on the layout, try to be decent and generous, and try to express politeness implicitly. (Teachers and seniors love this. I'll tell you) it should be no problem to attach the picture.
How far can you draw? Can you create it yourself or copy it directly? First of all, what is your current level of drawing at the ministerial level? If the minister's painting is amateur, if you copy the chapter and sketch, he will think you are professional.
Or Chinese painting (personally, Chinese painting is not recommended, and meticulous painting or freehand brushwork is time-consuming and the effect is not obvious)
It is best to draw a small work in the form of illustration and introduce yourself in the blank, which not only reflects the talent of painting but also the level of calligraphy.
If you don't have any ideas, you can collect illustrations online, and don't deliberately imitate the situation for reference only.
Self-confidence, reservation and politeness, knowing these three points, conquered the small battlefield of the propaganda department.