i have Been looking for Months now and i stumbled uppon many Methods to get the Mesh Texture Bright/Glow but they all seem have a downside but After Watching the result that bro got , it triggered my inner nerd
If you talking about the difference between the first and second image then it looks like it comes down to the level of detail in the texture and the amount of shadow added.
If you’re looking for lighting solutions try adjusting the bloom(?) maybe??