All tutorials from Daniel Danielsson on Youtube are excellent, useful to even the most advanced of us, and amongst the most well-made of any I have ever seen, but this one is particularly clever and rewarding, so thought I'd share it here for those of you who haven't seen it yet.
We're using Xpresso as a shader network to mask some puddles onto asphalt, and not letting the kittens get wet, so it's all good. Enjoy.
CBR