All I did was take a piece of brown construction paper and cut out the shape of a tree trunk and branches. I glued them onto a piece of white construction paper so that the bare tree was already on the paper. Then I just took some strips of red, orange, yellow, and green construction paper and ripped them into little squares for the leaves.
I just took a glue stick and place a little glue on each piece of colored paper and let him stick the "leaves" onto the tree. He loved decorating the tree.
I think he did an awesome job and the cutest part is that he placed a lot of the leaves down by the bottom of the tree or down below the branches so it looks like falling leaves.
Lastly, as I do with all of Colton's art work, I wrote his name, age, and date on the back and laminated it. Now I have an adorable fall picture for our fridge :)