Yes, absolutely! lolJack's tattoos on her forearms look kinda dirty to me - I know very little about tattoos, but don't people take into account their skin tone and the size and intensity (block of colour vs line drawing - I don't know the terminology forensically!) of the design, and its proportion to the body part, before getting it done?
A good artist will look at the shape of the body part, texture of skin and muscle movement etc.