The method of black and gray changes: the dilution of the pigment, the speed of hand movement, and the depth of penetration. (These three methods can change the density of pigment particles in the skin)
For specific operations, the three methods can be combined to pierce a uniform matte surface.
Don’t be lazy. Dilute the color into five cups. No. 1 is completely black, No. 2 is half black, No. 3 is 25% black, No. 4 is 10% black, No. 5 is 2% black, and then add a cup of distilled water. Fill with distilled water or diluent.
The detailed process of large-area black-gray transition:
No. 1 ink rotates in a small circle to move slowly to speed up the movement (to produce a transition in a color) No. 2 ink stack is pressed at the fast-moving position just now to slowly pierce it to speed up the movement, and so on to the lightest place of No. 345 Puncture with clean water (because there are still a small amount of pigment particles in the needle mouth).
Small area transition, you can jump:
No. 1 ink rotates in a small circle and moves slowly to speed up the movement (to produce a transition in a color) No. 3 ink overlaps at the fast moving position and slowly pierces it to speed up the movement---and so on to No. 5 or clear water .
