Terrain Skin Variations

[PurplePoot]

Allright, im trying to make some terrain skins, and i find that warcraft decides to make 2 variations of every one from random pieces, making it look bad and also miss parts that i want to feature.

Is there any way to tell warcraft what variations to make, or at least predict it?

For Example, what if i want 18 variations in certain places like certain skins they have?