FRONT PASSENGER WINDOW WON'T FULLY CLOSE: FUSE OR MOTOR?

What is your question?

THE CAR HAS 150K MILES SO I CAN'T COMPLAIN, JUST THAT I'D LIKE TO PREPARE MYSELF SINCE EVERYTHING YOU DO ON THIS CAR IS EXPENSIVE. I THOUGHT I'D ASK IF THERE WAS SOMETHING I COULD DO THAT WOULD HELP ME DETERMINE IF IT'S A FUSE OR MOTOR ISSUE BEFORE I WALK IN SLACK-JAWED AND GET SLAMMED FOR AN ASTRONOMICAL AMOUNT FOR SOMETHING SIMPLE. THANKS.