I don't know that you will get "additional" attention? I think those people who know you are just going to be happy for you? But I would think of it a little like one who has depression and takes meds and the depression gets better? One doesn't get to feeling better than they normally would, they just get to the baseline of what they would feel if they hadn't had the depression; they don't themselves change, become "happier" or something, that has to do with their interactions within their life and how they personally see things.

I think new people, who don't know you may not know that you had a physical blemish in the first place? So they're not going to react to you any differently than "normal".

I'm guessing from your comments that although others have said they thought you were lovely already, that you either did not believe they really felt that way or you have some notion that loveliness is a agreed-upon measure and if you were lovely before and yet physically flawed, then you would get even more lovely when the flaw was removed. That is kind of squishy thinking as what I find lovely just is lovely, can't really get "more" lovely? How can one compare one mountain top view with another? Is it better in Switzerland or Colorado? It's a personal thing to the person viewing, not the person/thing being viewed. If I say I find you attractive now, to me, you're attractive and I won't like you more just because you've had a physical blemished fixed.

I think you will feel better, both anxiety as you mention but probably also relief and an increase in energy from not having to hold up that hard view of yourself any more. I think you will learn to see yourself better over time, not instantly, and there will be a lot of "Oh yeah, I don't have that problem anymore!" remembering :-)