Hey Saanvi,
Financial leadership is the chief financial officer, who brings competitive advantage to the company they work.
Based on my research  the most important characteristics for finance leaders should be-

1. Communication
2. should be apt at both setting the targets and meeting.
3. they work towards the company's long term vision.
4. should be vigilant toward the organisation.
5. should be cconfident.

hope this helps you:-)