Bad Karma?

Hi all, I have 2 current tattoos, 1 tribal on my lower back and one polynesian/tahitian on my upper arm/shoulder/chest. I am very interested in the different cultures of the world, their languages and meanings, what I wanted to ask is would it be considered bad karma to add a tattoo from another culture to my existing ones? i.e - an ancient egyptian one on my upper back? that would mean 3 different tats from 3 totally different cultures....any advice? thanks...