The issue with the leaves of course is that its a non-seamless texture, rather its a photo of leafy ground. Like using masks, I placed a rectangle of dried grass, with a rectangle of the leaves on top. Then a transparency cloud filter was used on the leaves to show the ground from beneath.

Had I decreased the size of the leaves, the repeating pattern by the non-seamless texture would become too obvious. I could possibly play around with the texture to make it more seamless or I could add some additional detritus to cover glaring non-seamless joins.

At the scale I made them, seams are more or less invisible. I'll dabble some more in the wee hours of the morning - I've got some gaming to do in a few...

GP