by Marianne Gagnon, public domain

based on public domain pictures

    http://www.publicdomainpictures.net/view-image.php?image=39876&picture=moss&large=1
    http://www.publicdomainpictures.net/view-image.php?image=598&picture=dandelions
    http://www.publicdomainpictures.net/view-image.php?image=59748&picture=fallen-leaf
    https://openclipart.org/detail/22146/twisted-branch-4-by-steren
    https://openclipart.org/detail/94957/ramatrazo-by-rastrojo