Hi there @Jude-Perera,
**Specular** in materials is what allows for that puddle look!
I've created a little example scene for you!
https://www.dropbox.com/s/di6210yxuv0zm8q/PuddlesExample.unitypackage?dl=0
This example was inspired by this video (back when Unity 5 was in beta):
https://www.youtube.com/watch?v=D392TitSE4k
Preview image below:
![Shows image of material setup][1]
Note how you don't really need the diffuse in the albedo slot.
If you click on the White with Black accents texture. You can change the texture type to Normal Map, resulting in the same normal map as in the files.
Shown below:
![Click target Texture, Change Texture type to Normal Map][2]
Then, you just fill in the normal map.
Make sure the shader type has some sort of Specular in it.
Then create a black and white inverse of your main texture.
**White** for the puddles (**LOTS of specular**),
**Black** for ground (**NO specular**),
you can use gray-shades to get semi-specular effects.
I then edited the skybox a bit to get a less intense reflection.
To do this, I edited the skybox in **Window => Lighting => Scene => Skybox**.
This is the result (was only allowed 2 images):
https://gyazo.com/2f92de993b5d9474c4ec3073d8c84179
I hope that's what you were looking for. If it was, please accept this answer, it'd be much appreciated!
Thank you for bearing with my terrible paint skills (don't have photoshop on this pc) and thank you for asking such an awesome question, now I know how to make puddles too, haha.
Best of luck and if you need anything else, let me know :)
[1]: /storage/temp/82227-puddleexampleimage.png
[2]: /storage/temp/82228-puddlesexplained.png
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