Hi, welcome. One week is not enough time to know how a tattoo will look once it has healed. Give it at least 3 more weeks and then see what it looks like (and 3-6 months will really tell you.)
+1
If you start screwing around with it before it's completely healed, you'll probably do more harm than good.
Also, if you aren't happy with the tattoo, don't go back to the same artist. Maybe it's me, but I don't get that. If I'm not happy with someone's work the first time, why would I give them a second shot at my skin?
Hey there! Tattoos take some time to heal and it's normal for them to look dull and faded for a few weeks. Your case may be a bit extreme but give it another week or so for the skin to rejuvenate. I'd also check back in the with artist after a couple of weeks to get their assessment.