This could be used to welcome a new student or introduce classmates to each other at the beginning of the year; Especially effective for ESL students. Extra practice for purposeful handwriting , too.
Everyone will be eager to write a page for other classmates.
There are plenty of “selfie” portrait outlines so choose one that looks just like individual students
I have added blank face shapes as another option.
Perhaps, you will find it is best suited at the end of the year as school vacation and a new grade begins.
But YOU decide.