Perhaps you could improve the Dithering on the tree.
....What's dithering? Do you mean the shading? If so, I decided to go ahead and switch those root tiles with the others I made that had the brownish-red in them (Hey, the tree is SO big, it REQUIRES Csets 3 or 4 of the OoA and OoS palettes in order to look right in them! O_o The "Cset2" function won't work where the roots go to the trunk and the leaves appear, because it's too big, so it won't look right even with the Cset2 function used!). Hey, I thought the form seen in the shot might be bad, so I went ahead and made me some more with the other colors. I thought ahead there.