This is really sad. The way you're talking isn't healthy. You don't want to fall down this rabbit hole.
Your body will still be pretty much the same shape, just a smaller version of it. So your tummy will still stick out in the same shape, just a bit smaller. Your proportions won't suddenly change.
If a 6 is not your natural size you would also have to starve yourself to maintain it. It will consume all your mental energy and make you boring to be around. You will end up obsessed with food. And be expensive if you got rid of your old clothes then gradually put weight back on.
I've experienced this scale of weight loss a few times due to serious illness. I didn't notice I was losing weight because my body was still identical looking to me, just gradually smaller. Obviously I noticed when my clothes stopped fitting and it's hard not to notice being able to see bones protruding when it reaches that point, but the proportions are the same.
Why do you want to see your own bones through your skin, by the way?
You might get a high and sense of exhilaration from seeing the weight go down, but I doubt you will from being skinny - you probably won't feel skinny, so you'll get sucked into a spiral of chasing an ever skinnier version of yourself where you'll find happiness.
Oh, and size 6 clothes tend to be cut for women with next to no hips, so it will be even more disappointing if you've psyched yourself up for your perfect self as a size 6 and you still don't properly fit into clothes with that label. Which is where you could find yourself chasing size 4 ...
Nothing wrong with altering your lifestyle generally and some weight loss being part of that.