I used a bezel curve to draw over the image.. you can do the same (and fast) with the path (curve), then later just created a "glowing" material, to act as a lighting source:
Here you can see my work in progress (WIP) of what I'm learning related to game design/development using tools such as Blender (also plugins), Susbtance painter, Unreal Engine. I don't work in the area actually, but it's my goal. Update: Now working as 3d modeling artist.
This is a medieval scenario that I created using blender, based on an image from the game age of empires 2. I am showing the before/after I dealt with lighting in a better way.
The project can be seen here: https://www.artstation.com/artwork/Xn6Gal
Object work in progress: https://sngnwip.blogspot.com/2021/04/medieval-scenery-update-1-remodeling.html
Reference image:
How it was done? I will post someday.
Here's the before/after progress: