Here's a rough order of the things you need to do if you want to provide a truly useful and accurate time estimate:
1. Gather requirements (see Chapter 6).
3. Determine skill sets and resources (see Chapter 7).
4. Create a project network diagram PND (we discuss the PND in the following section).
5. Develop a rough order of magnitude (ROM) estimate (we discuss this topic later in this chapter).
6. Develop an approximate time estimate.
7. Create a schedule.
8. Optimize the schedule (we explain these topics later in this chapter).
Every project manager's goal is to create the most accurate estimate possible. Unfortunately, finding the best technique to accomplish this task takes time. But with the right tools, you can do it. Make sure you have a work breakdown structure (WBS). The WBS is needed because it reflects everything that the project manager and the project team must create to complete the job. The more details you have, the better prepared you'll be to factor in delays, risks, and small, time-consuming jobs when you work out the project network diagram and the project timeline.
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What you need to know about… Project Management Made Easy! Project management consists of more than just a large building project and can encompass small projects as well. No matter what the size of your project, you need to have some sort of project management. How you manage your project has everything to do with its outcome.