Buying Design - Size

I like the "Curvy Tribal Sun" design at this site. I do not see any dimmensions for the size though. I want it to be 1.5 inches wide. Is the best approach to buy the design, scan, and resize on computer or what? http://www.tattoonow.com/Tattoo-Designs/Tribal/item589.html

Buy the tattoo design and bring the design and line sheet to your artist who will size the tattoo perfect for you!