The pose is perfect for Monika and if you look closely you can see a the shine of the "screen".

This is going to be Sayori and Stephen's hair color at this point 'cause it's hard to find Sayo's hair color but I tried.

A Neko Natsuki 'cause why not. Any Natsuki is a great Natsuki and I saw cat ears so might as well make her even cuter if possible. Use your imagination on what caught her eye.

Yuri was the easiest one to do mostly 'cause this model had her sweater n stuff. Also the hair color and expressions I found.