Sugestion on paint in mudbox

NAIMA

Ok I have a tree and Ihave divided it into two uv region maps , one to detail the roots and one to detail the top , I want to use tiled overlapping uvs for the branches and the top part of the tree and instead detailed texture mapping for the roots made in mudbox and I also would like that the conjunction between the two is seamless looking, how you suggest to do this in mudbox?