A strong opening paragraph, clarity in communicating ideas, smooth transitions and narrative flow, a persuasive argument, and the avoidance of jargon and rhetoric are all elements that contribute to a successful proposal. Be clear in describing your project. Successful proposals distinguish goals from objectives and objectives from the methods employed to achieve them. Rhetoric and grand statements are jarring to most reviewers. Be accurate and reasonable in budgeting project costs.
Inflated budgets are red flags to seasoned program officers and proposal reviewers.
Incomplete or underestimated budgets suggest bad planning and, if funded, can cause problems when it's time to complete the work. Think the budget through. Base personnel costs on realistic projections of how much time it will take to complete the project activities. Don't use estimates when you can base a budget item on past expenditures or a cost quote from an outside vendor. Cost out travel-related expenses.