Here's another tip that I've learned that prevents you from having thinning locs. Sometimes as your hair grows it will grow outside of the base of the loc or inbetween the locs. It's important that you incorporate those hairs back into the loc base so that you don't have integrity issues down the line such as thinning.
I just recorded a short tutorial. I hope it helps someone.

Let me know if you have questions.
Again thanks for all the love