#15 i like the green colour, but prefer the trunk and branches in #8. I do not like the heart shape. The actual paw print leaves are nice in this version (#15)
if you can change #17 to have a tree/leaf/canopy shape closer to #8 with the more random direction paw prints (instead of all going in one direction) can you try #16 with a canopy like #8 instead of the heart