my initial question would be = are the other images "bad" because of subject matter, style or execution? Lots of artists work in more than 1 style - that's versatility. Subject matter is most often up to the canvas. If the other photos show poor application, poor linework or poor artistic choices then you'd be taking a huge gamble that this person is going to show up just the way you want them to on the day you're sitting in front of them. Some dirtbags even put other artist's work in their own portfolios. Consistency is very important.
We get this question a couple of times a week.
A tattoo take 4 - 6 weeks to heal. Unless it's red, oozing, smells bad, extremely painful, just let it heal. You won't know what it's going to look like until it's healed. No sneak previews.