In drafting, there are points where one realizes something is missing. Some idea or notion makes sense only if the seed is planted at an earlier stage. This discovery can be both frustrating and encouraging at the same time.
Moving through a draft is necessary to find the holes. All of the pieces will not be in place when you begin.
This may take months. A project can take up a lot more time than you originally may have thought you needed.
Some talk of setting deadlines as a motivational tool. There is value in that. But understanding from the beginning that you will not know your entire story before multiple drafts occur can save you from a lot of frustration.
Enjoy the process and work harder if you need to but understand that the quality of the project will reveal itself slowly and steadily.
All good work takes time.