is this an inside or outside door ????
what kind of acrylics ? (name brand, etc.)
some "acrylics" will come off with just touching.
some Bob Ross acrylics are pretty permanent.
I have a small artistic brain and it does not think like this.
my kudos to the young lady for her ability to see outside of the box.
knowing what paints she used and how the door will be displayed
will determine any kind of protection after it is all done.
(the wrong clear coat over what she used could actually lift her painting
and cause damage past the point of no return).
also an important note: how did she prepare the door before her painting?
as many have found out, the white factory primer coat is not always the best
foundation for additional coatings.