You can see the mark if you look between the branches on left hand side.
Here's a close up. I think that the leaves needed more contrast between the colors. I used three different color of threads for the leaves but you can barely tell it. I needed a darker color to give the leaves a bit more depth. This piece took over 5 hours to complete because of the dense stitching on the trunk. So much for doing a simple piece! Note to self - iron it anyway, even if you're in a hurry.