...
Anything that should look pixelated will not look that way in a couple of years. The lines will smooth out and any stretching/growing is going to destroy it. Unless they are done large enough I would not recommend going for that look. ...
I would add the caveat that this is true at least 90% of the time, and likely 99%. My wife has a tattoo she had done about 20 years ago that still looks like frelling flash, like it was drawn with a set of fine line Rapidiographs this morning. With my tattoos, on the other hand, the
three-needle outline looked like it was done with a 7 Round after three years. Luckily, they stop comparitively soon, but my "bleed" fast and hard for the first couple of years so the fine-line work looks like it was done with a Sharpie.
It's possible that your tattoos will look exactly the same after 10 or 20 years as they do the first day they are compleatly healed--but statistically that will not happen and the only way to know for sure is to get a tattoo and see what it looks like 10 years later. Everything else
mod said is spot on (and even
that is unless you are an anomoly like my wife).
On the other hand, even if you lose the look of the pixelation after a while they will
still be recognizable as Mario mushrooms and
you will know the pixelation is there, under the spread...