how to make a cut?

figure A: the branch before cut

figure B: the branch after cut

This observation was done by myself. If you want to make a suitable cut on a tree branch,make sure you cut at the exact area in order to produce the new desired branch. In figure A,this is how the branch before cut and in figure B is how the branch after cut. The important to make cut at the exact area is to produce another 'double-branch' on the edge of the cut making the branch to double at both left and right side. The cut was left for 7 days.