In a perfect world, we could cover a "Mistake Tattoo" with a beautiful image and that old tattoo would simply disappear into the past with no trace. The new tattoo would magically hide any and all traces of that old mistake... But it just doesn't work like that in the real world.

Beware of tattooers that claim to be able to cover anything, even thick black tattoos with any color or image you want without any problems... You'll end up with an even bigger mess after it all heals…

Don't worry about finding an area that this tattoo is going to hurt More or Less. It's a Tattoo, it's not going to be pleasant. But, You will make it through it just fine. Instead, worry about where you want this particular tattoo; Get it there regardless of the perception of pain associated with that particular area. The pain is temporary. It hurts while I am physically tattooing you. After it feels akin to a sun-burn. When it's healed, you won't remember the pain. You will however, have a tattoo where you wanted it. In an place on your body that you will fondly look back upon in years to come and know that you made the right choice.