Turn the bulletin board into a classroom tree that embraces every student in the classroom. Add light green or brown construction paper to the edges of the bulletin board, creating a border for the tree. Sketch out a tree shape from a piece of brown construction paper. Cover the bulletin board in a piece of plain white paper and glue the tree shape on top. Help the children trace their own hands on sheets of green construction paper and cut out each handprint. Arrange the handprints on the tree, turning the handprints into leaves.
Buy or make letters that spell out "Welcome." Cover the bulletin board in craft paper and arrange the letters at the top of the board. Underneath the letters, place different types of art supplies. Draw the art supplies on sheets of colored paper and cut out the shapes before adding each one to the board. Add goofy eyes and other facial features to each type of supply, turning the supplies into cartoon characters.
When you do a craft project or art project in the preschool classroom, pick out a few projects to display on the class bulletin board. Alternate the projects, giving each child the chance to display her recent work. Place large letters at the top of the board, spelling out Best in Show. Add fake award ribbons or create trophy shapes from sheets of gold or yellow paper. Display the ribbons and trophies around the projects hung on the bulletin board.
Turn the preschool art bulletin board into a lesson for the kids. Custom fit the design for the age and skill levels of the students. For children not yet sure of their colors, display sheets of paper cut into swatches and list the color underneath. Go over the colors once a day with the class. Or, cut shapes from sheets of construction paper and hang those on the board. Work with the kids to understand the different shapes and colors on the board.