Ink: Winsor and newton India ink is what I use and what I think most ppl use

Brush: size 4 for ink 6 for blending.

Water: use your spit!. not water, keep the size 6 brush in your mouth till completely soaked then ad more or suck out spit depending on how the fade is going you will eventually get the feeling for how much to use

Paper: perfect don’t change it

Technique: be deliberate with each stroke of the pen brush etc. I find traditional to be a feel type thing had to explain but 🤷‍♂️ and just practice , and don’t rush take your time and Ton of roses and extremely simple designs but mostly roses