Todays client requested a Celtic Cross tattooed on the front of his shin to shield him as he walked forward in life. He liked the "tribal" look of spiky shapes, but is Irish and so wanted knotwork interlace. That required some custom fabrication. The photo is a combination of the first step, lines and shading, looking very stark against his skin, and then the final result with a pinstripe of light green on the sides of a deeper green center.
Celtic Shielding Cross Tattoo by Pat Fish