for future reference) SCRATCH TECHNIQUE SCRATCH WITH CUSTOM BRUSH ADDING HIGHER

https://www.youtube.com/watch?v=EKnha8hfZZo(just for future reference)

SCRATCH TECHNIQUE

https://www.youtube.com/watch?v=EKnha8hfZZo

SCRATCH WITH CUSTOM BRUSH

https://www.youtube.com/watch?v=J_Z3KF_RX5E

ADDING HIGHER CONTRAST EDGES

https://www.youtube.com/watch?v=Ixnlsdv3z3Q