Taking it all the way to the top. As a chief finance office, you may not be the CEO, but you're pretty far up there. In fact, you're so far up the chain of command that you're in charge of all of the company's financial actions. That's a job with a lot of responsibility.
As the CFO, you get to follow the company's cash flow and spend some time doing financial planning to ensure everyone is staying on budget. You may even get to allocate some funds to an under-budgeted department. But the biggest part of your job is identifying any weaknesses or strengths that the company has when it comes to the green stuff.
As the CFO, you can't be someone who just says "yes" all of the time. You have to have a keen mind when it comes to budgeting because you don't want to be the cause of the company going bankrupt. So you'll have to say "no" from time to time. But you'll survive.