Need help creating a texture.

[rich2005]

(07-17-2024, 09:49 PM)GamingBotanist Wrote: From the preview it seems I have the wrong selection.  

I do not really know what you require, I am not really into games graphics, I sometimes dabble in 3D

I see from your screenshot that you have a  transparent background. If you want to retain that, use the alpha lock (top of the layers dock) in place of the selection. 
Then as with everything the result depends on what goes in. It is a bit like a bump map where White is up, Black is down and greys will round the result.

So I did give this a little blur before MLBevel

   

...and not much difference to Filters -> Generic -> Normal Map