Statement of Cash Flows -Please provide a details to the following:

Question 1: From the Statement of Cash Flows...What do a company improve its cash flows?

Question 2: Operating Investing, Financing, where would companies hope most of the cash flow is derived?Should companies be concerned if the company is too "top heavy" with receiving cash from financing activities?

Question 3: What would be an indicator for assessing the ability to generate positive future net cash flow?What line items within the statement of cash flow would be able to be tell the future?