I loved how Rutvik's demo looked but of course not exact reproduction! More an experiment for me to use products I buy and never use. 

Hot press strathmore paper 

Arteza olive green and holbein jet black gouache and the showstopper is Japenese kuratake gold liquid paint. This was probably more suited to water color and need to be thicker but it shines depending on how you hold it. I do have some metallic gouache (never used) that I might try in another attempt. Loved the class.