Please don't do this. The station is very busy and the commuters do not have time to navigate around people focused on their smartphones.
Instead, familiarize yourself with the general layout. There's no need to memorize the entire map, only the portion you will be using. Inside the station there are plenty of signs overhead and even on the floor to help navigate.
For what it's worth I was joking. I've only been Shinjuku as a tourist, so I unfortunately won't be able to familiarise myself with the layout, but I do feel your pain. I've seen the same thing in smaller stations in the London and absolutely hate it.
The signs are incredibly confusing and often will all point to each other from every direction.
How do you expect tourists, including people coming from other regions of Japan, to familiarize themselves with the layout?