>>289788954
you can copy your main texture into the emission slot on the standard shader and set the emission strength above black which will make your avatar glow as much as you want. That might fix your issue. If you don't want to entirely glow, you can edit the texture in the emission slot to only have color where your problem spot is.

UTSV2 is a good shader for anime styles, or xiexe's xstoon. Poiyomi also apparently, though haven't used it myself.