Really enjoyed to watch this video tooand try to figure out how to render different materials.
This took me hours ( i think at least 4 or 5) to paint all theses textures, i'm not very fast right now but this exercice was a good starting point to create textures and add some lighting on them. If you have any advices, comments or critiques on my studies, feel free to comment, i would love to have some reviews on it.