How to fix wavy surface

[WuYuFeng]

(07-25-2021, 11:29 AM)rich2005 Wrote: It is that shading which give the image a bit of shape. You could replace the whole of the textured area with a new pattern. It will look flat.
The attached 01-fabric.png goes in your Gimp textures folder (wherever that is in MacOS) . Made using a Gimp plugin resynthesizer as a seamless image.
Make a selection. Fill with the pattern. Add a shadow to give a bit of shape.

A 40 second example https://i.imgur.com/zhTj27o.mp4 you have the time to be a bit more accurate.

Thank you Rich, this is very helpful.