Okay, there is something a little bit off, although it wasn't what I was thinking it was. The four vertices of the plane object should be matching up with the four corners of the UV grid, so that the UV map covers the same area as the Texture map (tile picture. The vertex at the top right isn't in the corner, and I can't see the vertex in the top left at all. They should be on the grid, just like the two at the bottom. Can you move them in the UV editor?