2. Connection with users and knowledge of their needs and of their willingness to pay.
3. Ability to estimate project's demands in terms of effort and expenditure, given a set of objectives. (This is just a part of an expertise really; often overlooked, but crucial here.)
Step 1: Based on the user needs, the estimates, and maintainer's other realistic earning options, calculate financial goals.
Step 2: Run the funding campaign.
Step 3: Refine the prerequisites, repeat the steps.
