Can you help me please?

I want to add some light effect points on object, I've jet done this passed year, but now I don't remember how.
I remeber only until I export model with sketchup, added effect points with text tool and then...???

Thanks in advance for help.

I don't know how to use sketchup, so I'm sorry. You should try YouTube, there should be many tutorials on how to do that. Or ask a major CS maker, such as Vodhin.

I don't have sketchup either, only Blender.