New

Question 1

Base mesh UV unwrapping

Answer 1

I think un-fused base meshes such as torus are pre UV unwrapped.

Question 2

make sure to have a square representation UV canvass

Answer 2

May need to double the width: Texture paint: image workspace(left), “+ new”(topish center), change “width” amount to 1024px to 1024*2

Question 3

purple/pink texture paint object

Answer 3

indicates it’s texture is missing.

Question 4

Texture paint images are saved separately from blender files.

Answer 4

TP, IA, upper left area, “image”(dm), “save”(alt+s) or “save as” (shift+alt+s)
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TPIs are saved separately. image area, upper left area, “image”(dm), then “save” or “save as” or hotkeys.[‘alt+s’ to save ‘shift+alt+s’ to save as}

Question 5

allow for painted image texture

Answer 5

“shading” tab, go2nodes area, shift+a, texture(em),image texture.
tether “color” from “image texture” to “Principled BSDF” “base color”
on “image texture” select image file select to left of “+ new” and choose desired file.