Glow

[analog dirge]

yup emissive texture let you do that

[clever fox]

How does that work?

[analog dirge]

you need 2 texture , 1 default one , 1 with the parts you want to glow

for eg default texture is called "texture.png" 2nd texture (glowing one) should be named "texture_e.png"

and you need to put emissive.properties in optifine folder

this one

and it will work