11 weeks isn't very long .. some of the damage will fade, some won't. My skin texture has never gone back to what it was but I went back to my old shape with both baby #1 and #2, I just wear higher waisted jeans and slightly longer tops so noone has to get scared by my stretchies

And the crepe paper effect gets worse when you lose all the fat. I don't have it at all right now but I'm 10kg overweight with a nice flubbery pot belly. Once the fat is gone ... and I'm almost 10 years past getting my initial skin stretch