gimp 2.10

[maltje]

https://www.youtube.com/watch?v=bVbYXsBxpiY
I following this tutorial, getting good but from min. 7 on the thing he does is not working for me.
I just draw blak lines on a face.
Not an easy question I know, but what do I do wrong.
Also when I use descaling ,I don't see the grid and can't make my picture smaller.
I work on a Mac.

Kind regards.

[rich2005]

Easy one first

Quote:Also when I use descaling ,I don't see the grid and can't make my picture smaller.

The setting for grid lines is shown. 
Using the Scale tool, either click and drag the corner controls (squares) or enter new values for Width / Height 
Then click Scale.

   

Quote:following this tutorial, getting good but from min. 7 on the thing he does is not working for me.
I just draw blak lines on a face.

This is a guess,
You are painting with the layer active. 
Click in the layer mask icon to make that active, it gets a white border
Now paint in the canvas.