Print the attached stencil to trace onto the felt. You can also freehand draw a stencil that you will use to outline the tree onto your felt. After printing, my stencil was 3” tall.
Cut out the stencil and trace the smallest piece on the lightest green felt. I used a marker to trace onto the wrong side of the felt. Trace the middle piece onto the second lightest shade of green, and trace the largest piece onto the darkest shade of green. You will trace 15 of each shape onto each piece of felt. *see notes
Cut out all of the traced pieces, and arrange them how you want them to sit once glued together (slightly overlapping)
There will be left over felt in the lightest green shade. With the leftover felt, cut out 15 small rectangles about an inch long. This doesn't have to be perfect, but they will be used to thread the trees once they are glued on.
Use hot glue to attach each part of the tree in a layered fashion. Once the glue has cooled, flip the tree and glue the rectangular strip to the back towards the top of the tree leaving a small gap to fit the twine through. This will be easier if you use a chopstick or straw to hold up the loop while the glue dries.
Use a darning needle to sew the twine through the back loops of the Christmas trees.