Jaharl's Bucket of Fried Pixel Art.

[SmithyGCN]

Um, it's a square. Is it supposed to be ground tiles fit together in that shape? Because, if it isn't, I'd say you were pillow shading.

EDIT: Never mind. You said it was a tileset already. Anyway, it's a start, but you need more than just a few tiles before it can really be called a tileset.