This pokemon papercraft is Swadloon (Kurumayu), a dual-type Bug/Grass Pokémon, based on the anime / game Pokemon, the paper model was created by javieirni. Swadloon evolves from Sewaddle starting at level 20 and evolves into Leavanny when leveled up with high friendship.
Swadloon is a round, yellow Pokémon inside of a cloak of leaves. It drapes the leaves over itself and draws them closed around its body, so only a large, crescent slit remains for its face to appear. This leafy cloak keeps the Pokémon warm. Under its cloak are darker green, limp leaves which frame the the sides of Swadloon's face and trail down on the sides of its body. The top of the cloak has two semicircular leaves that form a V shape. On its back are the veins of the leaf as well as a bit at the bottom tip of the cloak resembling a rounded tail. Swadloon lives on the forest floor and converts fallen leaves into nourishment, which helps the surrounding plantlife grow. [Source: bulbapedia]