If you are looking for a cool way to decorate a child's room, consider painting tree mural on their bedroom wall. A tree mural is fun and easy to paint and it can be done by almost any adult (or mature teen). Here is a 3-step process that you can paint in a matter of hours, if you have a little help, or over a weekend if you are doing it by yourself.
Begin by drawing the tree trunk and branches. You do not need to be an artist to draw the tree, as no tree is perfect. Just look at a picture of a tree and do your best to copy it. In this photograph, a tree is drawn in a corner and painted brown. Use 2 shades of brown paint to make the tree look more realistic. First paint it a darker color and go over it lightly with a lighter color of brown.
Leaves of the tree can be made by using a stamp or a stencil. You should have 3 or 4 different sizes of leaves, so that when they are painted they look more natural and not like a carbon copy. In this case, you can see that a stamp was used to make the leaves.
Randomly paint or stamp on the leaves until you are satisfied that your tree is full. Use a variation of colors of green and even add some yellow and gold for a fall motif.
When finished, use a small paintbrush to fix any smudged edges on the leaves and to add details to the tree to make it look more realistic.