How to choose your execution time for a complete installation

How to manage your time to do a classical pose or Russian Volume, if you have 2 hours in front of you.

1) Make your lash map or roadmap according to your execution time
2) With a Sharpee pencil, separate your patches into 4 equal parts
3) 1st 30 minutes on the 1/4
4) 2nd 30 minutes on the 2/4
5) 3rd 30 minutes on the 4/4
6) 4th 30 minutes on the 3/4