It was really easy and pretty self explanatory. I used canvas and acrylic paint. I had the students with the larger hands start at the bottom and worked my way up to students with smaller hands. I had 18 kids in my class and I had some of them do their hand more then once to cover the whole tree. So there should be plenty of room even if you have a large class.
O Christmas Tree, O Christmas Tree,
How lovely are your branches!