I probably shouldn't show this particular picture, it looks really nasty, particularly when you find out that this is a black & grey tattoo! All that red is the body's reaction to the tattooing, it is showing up so much because the grey is very light.
But that too is something I had to learn, the body will react and quite promnounced at times as well. I was a tad squirmish at first, like anybody would be, but I've gotten used to it now and have come to understand skin and the reaction to it quite a bit more.
Still, this picture reminds me that tattooing is not the same as drawing on paper, even if it is very similar.