Tattoo on the color, with a few size needle ah, row or round ah, please expert guidance

Coloring generally use rows of needles, I personally use; fork rows of needles. Some tattoo artists use 'single row needle' completely depends on personal habits. Finally with a few needle size, that depends on the text how big the figure. The general size of the figure with a row of 7.9. can be.

White color is not suitable for large areas. Only brighten. Use closed circular needles, 3, 5, 7 is better.