placemeny question re;

thank you,first,tangles,i did not in any way mean  all stylist,i am aware that there are stylist here who are so helpful with there input,i just meant my hairlocs stylist,sorry did not want to offend in any way,i am looking for a blended look natural and subtle,i just am not sure if all my rows should have same colors or some the same some mixed ,and if bottom layer is darker,how many rows until i start mixxing up colors , am totally clueless