whats the right size for the image so its not streched out?
I cant figure it  out, I saw something about changing anchor but dont really understand it
the size is 256x256 right now and still streched

Hello,

The default image generated by the config is the correct default size. 844*109.
You can use any image size but you'll have to change the config option

what exactly do i need to chage and where please

Min anchor and max anchor, you have to change both values.

I invite you to use this website RustCUI
It will help you

ive seen your post before, there was not much explanation about how to use this. You mind giving a little more  explanation?