When you have listed all of the steps of making your product you need to produce a time plan. This can be best displayed using a Gantt Chart like the example below. Allocate an amount of expected time to complete all of the manufacturing of your final product. Include everything from obtaining the materials to painting and cleaning your product, there should be somewhere for expected times and somewhere for actual times so you can record ongoing progress.
Remember to list your tasks in order

Task 1 : Obtain materials
Task 2 : Using ruler, template other mark-out sizes
Task 3
Task 4
Etc..
Etc..
Etc..
Etc..
Etc..

See example of Chart below.