use black and gray colors, make the pattern be slow, add a pinch of water ripple effect Adjust ripple frequency

edit

warm colors brain Layer variation

edit

edit

use black and gray colors, make the pattern be slow, add a pinch of water ripple effect Darker shades

edit

use black and gray colors, make the pattern be slow, add a pinch of water ripple effect Contrast increase

edit

use black and gray colors, make the pattern be slow, ad a pinch of water ripple effect Subtle gradient shift

edit

edit

Iris Iris Realistic Shading

edit

Radial Symmetry

edit