When looking for an artist, look for this:

Open-minded: You should never use an artist that criticizes your design, or makes you feel like your design is “stupid”. Your designer should be open-minded and willing to accept your design exactly the way you want it

Patient: You should choose an artist who’s willing to change your design, if needed. Your artist should never rush you into a design if you’re unsure.

Creative: Your artist should be able to give you input into what colors and lines if you’re unsure.

Willing to change design if needed: Your artist should be willing to come back later and “touch up” your tattoo, often for free. Your artist should be open to re-scheduling appointments if you don’t like the design they draft for you

Moderately priced: Never choose a tattoo artist for because they are “cheap. Your tattoo is a lifetime commitment. Always choose a tattoo artist who explains why things cost something, and never choose an artist who’s trying to give you a discount. He or she may do discount work because they are bad at being a tattoo artist!

Overall, you should get to know your artist ahead of time. Follow your gut and never choose an artist because they’re pushing you into a certain design.
Happy tattoo’ing!