It's not okay to make a mess for others.
Jill makes a mess all over the room while she's playing with her toys.
Jill wants to decide what to do next.
Jill cleans up the mess herself before going to do another acctivity.
Jill puts her toys away but leaves the mess; without her toys it appears as though one of her siblings was responsible.
The room is clean once she's finished and everyone is satisfied with the clean room.
Jill's siblings have to clean up the mess, and they are upset about it.