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I work as if they were watercolors, start from the lightest to the darkest, diluting with water you get that effect and work that way throughout the drawing, you get beautiful results.

I do the same, but my patience to wait for each layer makes the ink bleed into the paper, usually

No, start with small amounts of product, otherwise the same thing will happen to you. It is not necessary to fill the whole page with water or ink, go from little to more.