Why do you want to join art club??
To learn different techniques and styles and start to incorporate them into your own art and see different creativities around you that give you inspiration.
This is a question completely based on your thoughts/opinions, but here are some ideas to get you thinking if you're drawing a blank:
- interested in the "art culture"
- open to learning new things (if you're not really familiar with arts)
- expand hobby choices
- develop/continue to develop artistic talent