ZBrushCentral

displacment map issue

as you can see on the image below, there is some strange issues with the displacment map (left= model, right= mmodel with displactment map applied)
most notably the nose has markings, and also the eye is more inflated.

what is going on, and how can i create a better displacment map?

A good place to begin is by listing the steps that you’re currently following and settings that you’re using. This helps us spot where you might be going wrong.

If you’re just looking for a general guide, that already exists. See the online documentation, linked in my signature.

well i shall try
1- model the model
2- tool>displacement map> create displacment map.
i dont touch any of the settings, i have tried although they result in alot of random small holes in the model.