I see exactly what you're pointing out. On first glance, it isn't really all that noticeable - but once you see it, you can't un-see it. Did your artist not use a stencil/template? Seems like pretty basic stuff (symmetry) that a top notch artist wouldn't mess up
Well, let me go through my experience at this place. It came recommended by three different friends, and so I stopped in with my gf who was also planning a tattoo and went over with them what I wanted, asked them who they'd recommend for the work, and made my appointment. I went home, checked out the work by my artist, and liked it. The week went by and I came in and the artist that was supposed to do my tattoo had gotten backed up by a pack (4 girls getting similar tattoos) a bit earlier and I either had to wait a bit or have someone else do it. Wasn't happy with this (as it was already 5pm and I wanted to have the tat done for the Rush show the next day), but I looked at the girls book and she had some fantastic work.
Now I know she was not working off of her own stencil, and hadn't really prepared to do this particular tattoo, and that might have played a role in the mistakes in the crown. The skull is something they do so regularly I'm guessing that's why it came out so well while the crown not as much. Also, the original image doesn't have the crown sitting perfectly on the skull, and I thought she did alright with most of it.
And further, I honestly didn't catch those things I mentioned on the stencil or right after, but as you saw, once I did see it, there is no unseeing it.