So glad none of them rip off
Hane-Hane; that's what I always imagined
Sowunamut (who shares the same typing as this CAP) looking like. I should probably study Makah symbolism a bit more, but as far as what I know now, a totem pole Pokémon would simply be ridiculous. Anyways, the designs I prefer, in rough order of how much I like them from most to least, are:
tea_and_blues
Yilx
DougJustDoug
mayatraese
Wyverii
RitterCat
Doran Dragon
noobiess
Steampowered
Kevin Garrett
Mos-Quitoxe
t3hb33
The designs of tea_and_blues, Yilx, and DougJustDoug seem to be most appropriate to this concept, a Pokémon that can utilize Sketch (albeit only once). Mos-Quixote gets an honorable mention, but his design doesn't really give off a Grass-type vibe. mayatrese's design has a certain elegance about it that I find appealing. RitterCat, noobiess, Kevin Garrett, Doran Dragon, and t3hB33 have really cute designs (pandas, hippies, koalas, lanterns, and horsies, yay!) Wyverii's is also adorable, and strangely makes me think of Skull Kid. Steampowered's is pretty freaking awesome (tree bear for the win), but I'm not sure how well it fits the concept.