A.
(1) Add lines to the edge to make the shape stand out.
(2) if you using more than one color, use contrasting colors.
(3) When white is used in the design, it is expressed as a transparent blank space.
(4) Please work with images that are long horizontally rather than vertically.
(5) Use colors that stand out against your skin tone, since colors too close to your skin may not be visible.
Also, please refer to the guide follow.
