The project planning process starts with a proposal estimate. Taking the time and effort to make a great proposal plan is a sure way to give the executing team the best shot for project success. The proposal estimate will have scope, schedule, and a cost. Understanding the scope is the first step. Utilizing a statement of work (SOW) or any document from your customer with the work required will establish the scope to be bid. Missing work can lead to schedule delays and cost overruns.