It's beautiful! But you know it anyway since you know your feelings are not based on reality.
To give you some comfort, my anxiety passed quite quickly. Now, two and a half years ago, I fully love my tattoo and it makes me feel so much better in my body. It's a beautiful part of me now and I can't imagine I just had a bare arm once :).
I even got a second big tattoo right on my chest from a different artist. I didn't have the same anxiety right away but a couple of months after getting it I was going through a difficult period so it hit me. Now I just realize it's like that for me with all big changes: I might want it, I might like it, but it is still going outside my comfort zone, so anxiety is natural and it just takes time to accept these things as a part of your new comfort zone.
Hope it happens soon for you, my inked buddy! In the meantime, getting support from the community reeeaaaaaaaally helps :).