how to make christmas tree on wall with lights

That's a great idea! You could use a string of lights to create a festive design on your wall, and then add some ornaments or other decorations to make it even more festive. It's a simple but effective way to bring the spirit of Christmas into your home. You could also use some garland or tinsel to add some extra sparkle and shine. And don't forget to add some music and enjoy the holiday season to the fullest!