What Is the Proper Way To Make Changes To Mesh That Will Be Reflected in UV Map?

Support Materials and Textures
1

When I switch to edit mode and make a mouth the opening doesn’t show in textured paint mode. How do I get that to happen please? Do I have to start over(Make a new uv wrap) every time I want to make a change to my mesh?
See screenshots:
https://paste.pics/ebead32f3e432d6f401e14462d791a48
and
https://paste.pics/4d648ebf2c342883a1629d1187603d12

Thank

2

So far as I know, the answer is “basically, yes.” You really need to get your mesh just the way you want it first, before you move on to texture-painting or anything involving UV’s. (X,Y,Z) and (U,V[,W]) are two entirely separate coordinate systems.