The paints you will need are:
Naggaroth Nightshade (GW), Stegadon Scale Green (GW), Huldra blue (Scale/Fantasy and Game), Moot Green (GW), Flurescent Yellow (Model colour) and Ivory (model colour). You will also need a dry palette and a good drybrush.
The only technique for painting that this neon green requires is drybrushing.
Step 1: After undercoating your miniature, heavy dry brush the entire miniature in Naggaroth Nightshade – make sure you get into all the cracks and recesses, as this will provide shadows.
Step 2: Drybrush the miniatures with Huldra blue.
Step 3: Drybrush with Stegadon Scale Green:
Step 4: Drybrush with Moot Green. At this point, I started to just do the top part of the miniatures to show that the bugs are in the light, however you could also do the whole miniature if you wanted to.
Step 5: This is where the flurescent paint comes in. It is too transparent to really be used on its own, so mix it with the Moot Green at about 50/50 to start with, then dry brush it onto the miniature
Step 6: Mix the flourescent yellow with the ivory again at about 50/50 and lightly drybrush over the top of the miniatures for the really vibrant green. The lighter you want it, the more ivory you need to add to the mix. The last two steps can be repeated for a brighter effect.