Question about yellow paint

Hi. First, thanks for the great course! I accomplished both of the models, but honestly have very little understanding of how it works. I am going to finish the bonus items too. I keep telling myself that my first models 18 months ago were just following along without understanding and finally I started picking up what was happening. My question is: why does the yellow paint in your video model have some "grit" to it and mine appears very clean. I used the material exactly like you did, but the paint looks new. Just wondering if I am missing something or if the material is somehow adjustable. Thanks again!
  • Jonathan Lampel replied

    Thanks Harlen! That is how it usually works - follow along for a while and eventually it clicks. One thing you can always do to speed that up is to use the ideas in a lesson to make something that's different from the tutorial, even if it's just a little experiment with primitives. E.G. after a lesson about arrays, try to array Suzanne in a fresh scene and only look back at the lesson if you get really stuck. Experiments like that make the concepts stick. 

    As for the paint, I believe the grunge comes from the ambient occlusion node, so it does depend on things like the surrounding objects, scale of your objects, whether or not AO is enabled (if in Eevee), etc. It's not the most robust, but it worked ok in this case.