Make rows with all your foods, with each row getting a little longer until a tree shape (triangle) is formed.
Use a square piece of chocolate as the tree trunk.
Stick little sprigs of rosemary in between to look like pine needles.
To make a star, take 3 toothpicks and add a grape on each end, leaving the middle of the toothpicks exposed. Lay the toothpicks on top of each other so the grapes form the points of the star. Next, lay a blueberry on top of the toothpicks.