Tribal Marks are special marks made by the primitives to their children before maturity. People hate the fact and regrate seeing tribal marks on their faces upon maturity.
But there's nothing one can do about it other than being positive and moving on with life.
Well, it is not their faults but the deeds of their parents as a result of certain believes. The reasons are only known to them and one just have to be positive and embrace oneself just the way they are instead of looking down on oneself because of those marks on the face.
Here's a pen drawing of a lady with marks all over her face. The drawing was done with a blue ballpoint pen on a cardboard paper using cross hatching technique. My steps are below: