37 YO, 95% Overbite, Slight Overcrowding in Front

So here I am. After years of wanting to do something about my teeth (they are very slightly overcrowded on lower front) I have decided to go for it. But that prompted me to take action is my overbite (95%!). I had no idea it was so serious because none of my previous dentist ever mentioned it to me. I knew I have a deep bite but I always thought it is normal. About a couple years ago I switched to a new dentist and she immediately pointed it out to me. At first I thought she might be exaggerating and didn't pay attention to it.
Well, fast forward to this spring and all of a sudden I notice that my from lower teeth are starting to shift and hurt (front teeth are knocking lower ones). After waiting for a few months for things (teeth) to settle around I finally realize that I have to do something about it.
Last week I went to an orthodontist and they scanned and took pictures of the teeth and they confirmed that I can do Invisalign! It was such a relief since I was not mentally prepared to do braces.
Anyways, now I am waiting for my first trays to arrive! I will try to keep track of my progress here.

DK.

So I got my 1st tray! which I cannot wear just yet because of the holiday season. I did not want to start my treatment right now and have to have my attachments put in right before Christmas. I was given my 1st tray that I need to wear for 1 week before they add the attachments. We do this so that I am getting used to the tray, putting it in and getting it out, etc.
So now I have the trays and I keep staring at them, lol. I am really excited and nervous at the same time.
I also found out that I have 21 aligners and most likely we will then go into refiners.

I like that my doctor also gave me whitening paste that I can use weekly. The Invisalign trays act like customized whitening trays! I am going to take advantage of this and start whitening my teeth (I've never done it!).

OK, I'll update once I start wearing my 1st tray.

Happy Holidays everyone!

While playing with my trays before I officially start wearing them I noticed that the upper tray is not hugging the gum line. What I mean is that there is a gap between the edge of the tray on my two front teeth and the gum line. The tray fits perfectly everywhere else. It bugs me because i can tell this is going to create a lot of friction between the edge of the tray and the inside of my upper lip. I also don't think using a nail file on the tray will help (the gap is fairly large).
Is this normal? Anyone else experience this with their trays?