If you have already gone and used Google Images for your search for your new design, you need to know that so has everyone else. This is the first place that tattoo lovers go when looking for new designs, but it means that you could risk ending up with the same spider tattoo as someone else. And that isn't what you want.
I recommend researching a pay tribal tattoo site. A pay tattoo site gives you access to custom tribal designs as well as tattoo artists that do nothing but specialize in tribal tattoos. You also gain access to a huge community of like-minded tattoo enthusiasts that can help you with any questions you might have. These sites also contain quality reviews of local tattoo parlors so that you can find a tattoo shop that focuses on tribal ink. It seems as if there are new tattoo parlors opening up all the time, so finding the right one can take a huge worry off your mind.