How do I make brightmap sprites?

I want to take some sprites from realm667 that are in my wad and make them have bright eyes and parts. You know like in Legacy of suffering. I also want to do the same with textures.

I don't want to rip off Legacy of sufferings work, I want to make my own original.

Thanks.

Read this.

Thanks gez it helped.

While still on topic, the torches are neat in LOS with it having realistic instead of sprites. What I want to do is take realm667s other torches (purple/yellow etc) and make them the same. I have looked into LOS.pk3 and found this:

FlickerLight2 RedTorchA
{
Size 60
SecondarySize 75
Interval 2.0
Color 1.0 0.2 0.0
Offset 0 52 0


Object Keksdose_Redtorch
{
Frame TRCHA { Light RedTorchA }
Frame TRCHB { Light RedTorchA }
Frame TRCHC { Light RedTorchA }
Frame TRCHD { Light RedTorchA }
}

I see that the frames are linked to the torch stand (obviously) but
my question is how does this define the torch flame to appear realistic?

These "realistic flames" torches are created by having the torch actor constantly spawning "flame particles" actors. You should look at their DECORATE code to see how it's done.