The digital stamp is called Tree Hugger and it was colored with Spectrum noir markers. The sentiment is stamped with black ink and the little buttons are glued with glue dots to the paper, although they have some twine in them.
These are the colors I used:
Tree: JG6, JG2, LG5, LG4, LG2, GB7, TN8, TN4, OR1.
Skin: TN4, FS3, FS9, FS4.
Hair: TN8, TN4, OR1, GB3.
Jacket: IG10, IG6, IG7, IG4.
Dress and shoes: DR7, DR5, DR2, CR7.